Conversation so far:
When did Link Lyman begin playing for the Chicago Bears?
In December 1925, Lyman joined the Chicago Bears and took part in a winter barnstorming tour that featured football player Red Grange.
Was Link Lyman successful playing with the Chicago Bears?
The 1926 Bears team featured five players who were later inducted into the Pro Football Hall of Fame, posted a 12–1–3 record, and finished second in the NFL.

Question: How long did he play for the Bears?
Self-contained rewrite: How long did Link Lyman play for the Bears?