Question: Are Dave Williams and Chris McCaughan both in the same band ?

Context articles: Ghost Stories (The Lawrence Arms album)
Dave Williams (singer)
Deviations Project
Four One Five Two
Chris McCaughan
Buttsweat and Tears
Jenny Choi
The Broadways
Oh! Calcutta! (The Lawrence Arms album)
Sundowner (band)

Ghost Stories is a punk rock album by the Chicago, Illinois band The Lawrence Arms, released in 2000 by Asian Man Records.
 It was the band's second full-length album.
 With this release the band moved away from the political nature of some of their previous songs in favor of more introspective lyrics.
 Also, while singer/bassist Brendan Kelly had handled the majority of lead vocals on their previous album "A Guided Tour of Chicago", on this album he and singer/guitarist Chris McCaughan split vocal duties almost equally.
 This singing style would continue throughout their next several albums, and eventually the two would begin to share lead vocals in an almost duet style on Oh Calcutta!
 It also features the only Lawrence Arms song written and sung by drummer Neil Hennessy, "106 South".
 The album was recorded at Scientific Studios in December of 1999 by Mike Giampa.
 All of the drums were triggered, and the bass was recorded through a SansAmp.
 Accompanied by a heavily distorted guitar, this resulted in a very raw sounding album.
 It's loved by hardcore fans for its dark tones and lyrical themes.
 Brendan Kelly has stated that this is his second least favorite Lawrence Arms album, but called the cover his favorite.
 The album was released on vinyl for the first time in 2009 on Asian Man Records, with all new artwork.
David Wayne Williams (February 29, 1972 – August 14, 2002) was an American vocalist best known as the lead singer for the heavy metal band Drowning Pool.
Deviations Project is a British electronic music group composed of producer Dave Williams and violinist Oliver Lewis.
 The group blends elements of classical music with electronica; pieces such as Tchaikovsky's "Swan Lake", Bizet's "Carmen" and Bach's "Sonata in Gm" are recreated with modern music technology.
 Contemporary compositions, including Dave Williams' own songs, John Williams’ "Theme From Schindler's List" and Fleetwood Mac's "Albatross" were integrated with classical works on the group's first full-length release, a self-titled LP.
 They have also released the Christmas album "Adeste Fiddles" (a play on Adeste Fideles) and a second album, "Ivory Bow".
Four One Five Two is the debut album of Chicago Illinois's Sundowner, the acoustic side-project from Chris McCaughan, singer guitarist of The Lawrence Arms.
 The album was released on March 13, 2007, after many months of playing coffee shops and touring alongside The Lawrence Arms.
Chris McCaughan (born March 30, 1977) is the guitarist and vocalist in the band The Lawrence Arms.
 McCaughan was formerly the guitarist for the bands Tricky Dick and The Broadways (the latter also featuring fellow Arms bandmate Brendan Kelly).
Buttsweat and Tears is an EP by the Chicago punk rock band The Lawrence Arms, released October 27, 2009 by Fat Wreck Chords.
 It was the first recorded output from the band in three years, following their 2006 album "Oh!
 Calcutta!
" In the interim, singer/bassist Brendan Kelly and drummer Neil Hennessy performed in The Falcon, Hennessy also performed in the Smoking Popes, and singer/guitarist Chris McCaughan performed in Sundowner.
Jenny Choi is an American singer and cellist, who founded the Asians in Rock tour, and is the lead singer of the two-piece Chicago band, Sanawon.
 For many years she performed solo at the University of Illinois at Urbana–Champaign (where she received her undergraduate degree) as well as with a back-up band.
 She also played synthesizer and sang lead and backing vocals in the short-lived Sweet Black And Blue, with Philip Stone on drums and Ben Weasel at guitar and microphone.
 She played cello on Mike Park's second album "North Hangook Falling", The Lawrence Arms fifth album "Oh!
 Calcutta!
" and the debut album "Four One Five Two" by their guitarist Chris McCaughan as part of his side project Sundowner, and contributed vocals to three songs on This Is Me Smiling's first album.
The Broadways were a short-lived American punk band from Chicago, Illinois, formed in 1996 after the dissolution of the influential ska-punk band Slapstick.
 The latter's vocalist Brendan Kelly and trumpet player Dan Hanaway assumed the roles of bassist and guitarist, joined by Rob DePaola on drums and Chris McCaughan (formerly of Tricky Dick) on guitar.
 All but DePaola also assumed vocal duties.
Oh!
 Calcutta!
 is the fifth full-length album by the Chicago punk rock band The Lawrence Arms, released in 2006 by Fat Wreck Chords.
 It is the band's third studio album to be released on Fat Wreck Chords.
 In comparison with their previous album "The Greatest Story Ever Told", "Oh!
 Calcutta!"
 is considerably faster-paced and more aggressive.
 It also finds Chris McCaughan and Brendan Kelly sharing vocal duties in an almost duet style, while on previous albums the two had split most of the lead vocals between songs.
 Brendan Kelly has stated that this is his favorite Lawrence Arms album.
Sundowner is a mostly acoustic project of Chris McCaughan of The Lawrence Arms, also featuring Jenny Choi, Neil Hennessy, and Eli Caterer.