Question: Are David Vincent and Troy Sanders members of the same band? 

Context articles: Withered
Troy Sanders (composer)
Killer Be Killed (album)
Killer Be Killed
Mastodon (band)
Brent Hinds
Gone Is Gone
Troy Sanders
David Vincent
Samsara (album)

Withered is an American extreme metal band from Atlanta, Georgia, founded by Mike Thompson and Chris Freeman.
 Both members also participate in a crust punk/grindcore band Social Infestation, which also features Mastodon bassist Troy Sanders.
Troy Sanders (December 7, 1901 – May 3, 1959) was an American composer and musician who worked in the Hollywood industry from 1930 through 1959.
Killer Be Killed is the debut studio album from the supergroup Killer Be Killed featuring Greg Puciato of The Dillinger Escape Plan, Max Cavalera of Soulfly/ex-Sepultura, Troy Sanders of Mastodon, and Dave Elitch of the Mars Volta.
 It was recorded in September 2013 at Fortress Studio in Los Angeles, CA and released May 9, 2014 on Nuclear Blast Records.
 The album reached No. 58 on the U.S. Billboard 200 during its first week of release and sold around 5,500 copies.
Killer Be Killed is an American heavy metal supergroup founded by The Dillinger Escape Plan vocalist Greg Puciato and Soulfly, Cavalera Conspiracy and ex-Sepultura frontman Max Cavalera in early 2011.
 The lineup also features Mastodon bassist and co-vocalist Troy Sanders and Converge drummer Ben Koller.
 The band had slowly been working on material before announcing its name in October 2013, along with their signing to Nuclear Blast.
 The group's self-titled debut record was released on May 13, 2014.
 As of August 2017 they have sold more than 11,000 Records.
Mastodon is an American heavy metal band from Atlanta, Georgia.
 Formed in 2000, the group is composed of bassist Troy Sanders, guitarists Brent Hinds and Bill Kelliher, and drummer Brann Dailor, all of whom perform vocals in studio (except Bill Kelliher).
 They all perform vocals at live shows.
 Their musical style features progressive concepts and unique instrumentation.
 Mastodon has released seven studio albums, as well as a number of other records.
 The band's debut album, "Remission", released in 2002, garnered significant critical acclaim for its unique sound.
 Mastodon's second full-length release, "Leviathan", is a concept album based on the novel "Moby-Dick" by Herman Melville.
 Three magazines awarded the record "Album of the Year" in 2004: "Revolver", "Kerrang!
" and "Terrorizer".
Brent Hinds (born William Brent Hinds; January 16, 1974) is an American musician best known as a member of the Atlanta, Georgia metal band Mastodon, in which he shares guitar duties with Bill Kelliher and vocal duties with Troy Sanders and Brann Dailor.
Gone Is Gone is an American rock group formed in 2016.
 The band consists of Troy Sanders, the singer and bass player from Mastodon, Troy Van Leeuwen, one of the guitarists for Queens of the Stone Age, Tony Hajjar, the drummer for At the Drive-In, and Mike Zarin, a multi-instrumentalist, composer and founder of Sencit Music who appeared with Van Leeuwen on Sweethead's "Descent to the Surface".
 An eponymous EP was released on July 8, 2016, and the band released their debut album "Echolocation" on January 6, 2017.
Troy Jayson Sanders (born September 8, 1973) is an American musician, singer, and songwriter best known as a member of the Atlanta, Georgia metal band Mastodon, in which he plays bass and shares lead vocal duties with guitarist Brent Hinds and drummer Brann Dailor.
David Justin Vincent (born April 22, 1965), also known as Evil D, is an American musician who is best known as the former lead vocalist and bassist for the death metal band Morbid Angel as well as the bassist for Genitorturers.
 His early influences are Kiss and Alice Cooper.
Samsara is the third album by Yakuza and their first for Prosthetic Records.
 Furthering the departure from their debut, which displayed a more stripped-down post-hardcore style, Samsara, like Way of the Dead, is more eclectic and progressive; their experimental metal style assimilating Bruce Lamont's saxophone for a unique sound that some would label "jazzcore."
 Mastodon's Troy Sanders performs guest vocals on the final track, "Back To The Mountain."