James is renown for his work w big men. Not sure his X and Os got him attention as head coach material.
Brian James...
Coached high school basketball at Glenbrook North for 18 years. He coached his star player Chris Collins in the early 1990's. Chris' father Doug was a regular at those games. Doug Collins and Brian James became friends.
Doug Collins was hired by the Detroit Pistons to be their head coach in July, 1995.
He hired Brian James out of Glenbrook North High School to be his NBA assistant coach in Detroit.
Collins lasted almost 3 years in Detroit...
Despite winning 100 games over the previous two seasons, Collins turned off members of his team with an abrasive and overly emotional style of coaching. "I'm not going to lie," star Grant Hill said "I didn't enjoy going to practice, I didn't enjoy going to games." Brian Williams said "I became increasingly aware that Doug won games and we [the players] lost games."
(
https://www.baltimoresun.com/news/bs-xpm-1998-02-08-1998039171-story.html)
James was subsequently hired by Butch Carter who had just been named head coach of the Toronto Raptors. It was Carter's first job as a head coach. James would be an assistant coach. Carter lasted two years before being fired. Lenny Wilkens replaced Carter. After one season, he "reassigned" James.
In June 2001, General Manager Michael Jordan hired his former-coach-turned-TV-analyst Doug Collins to coach the Washington Wizards. Collins immediately hired his good friend Brian James to be his assistant.
After two sub .500 years, Jordan, Collins and James were all gone.
James spent the next couple of years as an advance scout for the Seattle Supersonics.
James was hired in 2005 by the Milwaukee Bucks as an assistant to new coach Terry Stotts. Stotts was fired in the middle of his 2nd season and replaced by assistant Larry Krystkowiak. Krystkowiak retained James for the next season, but the team finished 26-56 and both men were let go.
In the spring of 2008, Brian James was named by Johnny Dawkins (ex Duke asst) as agreeing to come to Stanford to be one of his original assistant coaches. (
https://www.sfgate.com/collegesports/article/Dawkins-builds-staff-3284044.php)
I found no records of that happening and it is unclear (to me) what James did for the next two seasons.
In 2010, the Philadelphia 76ers hired Doug Collins to be their head coach. He immediately hired good friend Brian James to be an assistant. Three mediocre seasons later Collins stepped down. The players found him "overbearing."
(
https://www.cbssports.com/nba/news/...rew-tired-of-doug-collins-being-doug-collins/)
Brian James immediately left the 76ers to be an assistant for new head coach Chris Collins at Northwestern University in 2013. Father Doug became a fixture at Northwestern games.