Dyn Queue in a nutshell.

A player didn't accept the AFK check. Your group was returned to matchmaking.
A player didn't accept the AFK check. Your group was returned to matchmaking.
You are now in a chat room with your full champion select team.
A player did not lock in their pick or ban. Your group was returned to matchmaking.
You are now back in a chat room with just your premade.
A player didn't accept the AFK check. Your group was returned to matchmaking.