I've just discovered the band King Of Hearts. Randy & Tim teamed up to provide backing vocals for the King Of Hearts 1989 album: http://hardrockaorheaven.blogspot.co...1989-1999.html
In So Many Words is very catchyTimothy B. Schmit and Randy Meisner : Backing vocals on “Working Man” and “In So Many Words”
According to bandleader Bruce Gaitsch, "The group KING OF HEARTS was born during Richard Marx's "Repeat Offender" recording sessions in 1988."
Both Randy and Tim joined Richard Marx for a live rendition of Take It To The Limit in 1987. http://richardmarx.com/tag/the-eagles/ several months after they both, and Joe Walsh, helped Richard out with his first single, Don't Mean Nothing.
I'm pretty sure Richard was involved with the Poco Legacy Reunion. So I reckon both Tim and Randy were in some way involved, at the start of the Poco reunion.
Bruce Gaitsch’s “little history” of “KING OF HEARTS”: http://www.cdbaby.com/cd/kingofhearts1
It sounds a bit too early for an Eagles reunion but, in different circumstances, Timothy could have been playing in Poco's support band during the Legacy tour.In 1989 I was working closely with Alan Kovac, Richard Marx's manager at the time. He told me he was releasing a new Poco album and by the next summer the band would need an opening act for their tour. If I wanted to put a band together we could have a deal (he would manage us) and an opening spot on their tour. George Hawkins Jr. joined after Timothy B. Schmit, who played bass and sang on the early King Of Hearts demos, left to rejoin the Eagles.
According to Wikipedia, Timothy is listed as a bass player on Poco's Legacy album. https://en.wikipedia.org/wiki/Legacy_(Poco_album).
Maybe Tim didn't fancy spending several months touring with the Poco guys.