Question: Who played for more National Football League teams, Billy Truax or Lance Rentzel?

Context paragraphs:
Forrest Gregg: Alvis Forrest Gregg (born October 18, 1933) is a former American football player and coach in the National Football League (NFL), the Canadian Football League and the NCAA.  A Pro Football Hall of Fame offensive lineman for sixteen seasons, he was a part of six NFL championships, five of them with the Green Bay Packers before closing out his tenure with the Dallas Cowboys with a win in Super Bowl VI.  Gregg was later the head coach of three NFL teams (Cleveland Browns, Cincinnati Bengals, and the Packers), as well as two Canadian Football League teams (Toronto Argonauts and Shreveport Pirates).

Buffalo Indians: The Buffalo Indians were a professional American football team that competed in the third American Football League in 1940 and in 1941.  The team played its home games in Civic Stadium in Buffalo, New York.  Owned by the Buffalo American Legion, the Indians were managed by Earl "Red" Seick, who was also player-coach for the team for the first five games in 1940 (he was replaced by Orlando Nesmith for the rest of the season).  While most of the AFL membership focused on raiding the rosters of the local members of the National Football League teams, the Indians (which did not have a local NFL competitor) concentrated on signing local talent, castoffs from the NFL, and men who played in the defunct second American Football League.

Billy Truax: William Frederick Truax (born July 15, 1943) is a former professional American football tight end in the National Football League (NFL) from 1964 to 1973 for the Los Angeles Rams and the Dallas Cowboys.  He played in high school at Holy Cross in New Orleans and college football at Louisiana State University and was drafted in the second round of the 1964 NFL draft.  Following the 1970 NFL season, Truax was traded by the Rams to the Cowboys for wide receiver Lance Rentzel.  He was part of the Cowboys' Super Bowl VI championship team in 1971.

Wendell Tucker: Wendell Edward Tucker (born September 4, 1943) is a former professional American football player who played wide receiver for four seasons for the Los Angeles Rams.  Tucker spent most of his first season on the "taxi-squad" while learning behind the Rams' starting flanker Bernie Casey.  Tucker saw action in 10 of the team's 14 games in 1968 (catching only 7 passes but 4 of them went for touchdowns), and then became the starting flanker after Casey's retirement.  The 1969 season would prove to be his most productive as, playing opposite wide receiver Jack Snow, he caught 38 passes for 629 yards and 7 touchdowns, including a 93 yarder vs. the 49ers for the Coastal Division champion Rams.  Tucker returned in 1970 but was hampered by injuries and caught only 12 passes in 12 games.  In May 1971, Tucker was traded along with Billy Truax to the Dallas Cowboys for receiver Lance Rentzel.  However, unable to regain his trademark speed because of a knee injury, Tucker retired before the start of the 1971 season.

AFC North: The American Football Conference North Division, or AFC North, is a division of the National Football League's (NFL) American Football Conference (AFC).  It was created as the AFC Central in 1970 following the completion of the AFL–NFL merger when two of the NFL teams—the Cleveland Browns and the Pittsburgh Steelers—moved from the "old" NFL to join the former American Football League teams in the AFC, in order to give the two conferences an equal number of teams.  The division adopted its current name in 2002, when the league realigned divisions after expanding to 32 teams.

Sports teams in Florida: Sports teams in Florida include many professional, semi-professional, amateur and college teams.  In professional sports, Florida has three National Football League teams, two Major League Baseball teams, two National Basketball Association teams, two National Hockey League teams, one Major League Soccer team, and many minor league teams in various sports.  Additionally, since the late 19th century Florida has been a significant spring training destination for Major League Baseball teams and their affiliates.

1922 NFL season: The 1922 NFL season was the third regular season of what was now called the National Football League (NFL); the league changed their name from American Professional Football Association (APFA) on June 24.  The NFL fielded 18 teams during the season, including new league teams such as the Milwaukee Badgers, the Oorang Indians, the Racine Legion, and the Toledo Maroons.  Meanwhile, the Chicago Staleys changed their name to the Chicago Bears, and the Racine Cardinals changed their name to the Chicago Cardinals.  The Muncie Flyers, Cleveland Indians, Brickley's New York Giants, Cincinnati Celts, Tonawanda Kardex, Washington Senators, and Detroit Tigers dropped out of the league.  A 19th team, the Youngstown Patricians, was scheduled to join the league, and had its schedule laid out, but folded before playing in the league.  A 20th, the Philadelphia Union Quakers, also was set to join (but presumably not as far along as the Youngstown plans), but did not, due partly to the fact that the Quakers were merely a front for the existing Buffalo All-Americans to play extra games on Saturday.  After a four-year hiatus, the Quakers instead joined the American Football League (1926).

Lance Rentzel: Thomas Lance Rentzel (born October 14, 1943) is a former American football flanker in the National Football League (NFL) for the Minnesota Vikings, Dallas Cowboys and the Los Angeles Rams.  He played college football at the University of Oklahoma.

Kari Yli-Renko: Kari Yli-Renko (born November 17, 1959) is a former offensive lineman who played for four Canadian Football League teams from 1985 to 1993.  Previously, he played three years in the United States Football League.  He played college football for the Cincinnati Bearcats and was selected by the Cincinnati Bengals of the National Football League in the 1982 NFL Draft.

American Football League (1934): The 1934 edition of the American Football League was a short-lived minor professional football league with teams based in the American South and Southwest.  The first of several minor leagues with the same name, the 1934 was also one of the first involving teams not located in the American Midwest and East.  While its membership was the cornerstone of American football in the southern U.S. (with several having beaten National Football League teams on the gridiron), the AFL had only one season of competition and folded after cancelling competition in the 1935 season.

Supporting paragraphs: Billy Truax Lance Rentzel
Answer: Lance Rentzel