A new character is on the way to join Intelligence to fill the gap left behind by Rojas, whose absence remains a mystery, so it’s possible that the overall status quo within the unit is going to be shaken up even beyond the latest developments for both Upton and Burgess.
All the same, Burgess and Upton have been part of the same unit for several seasons now, and arguably their biggest shared episode had a fair amount of their interactions complicated by their connections to Ruzek.