I believe Bozo wouldn't let Seibold do much at all in defence.
Bozos quick and unexpected exit right, hasn't got much air time on here, Especially not in the context of Trent failing in 2018, where as the ship was much more stable when Bozo was around.
I look at it as confirmation Bozo was having a much bigger say in coaching then was being acknowledged, even if it was in that director of coaching type role, Gould does at the Riff steering the ship, telling Trent what to do and how it will be fixed, without actually doing it himself.
Bozo being that go between communication with management, and giving advice on HR issues would have been massive as well.
I do suspect Trent's real complaint of lack of staff, is really more about Bozo not being here anymore for him to do his apprenticeship with. Who really was doing the recruitment before Bozo left? Funny how Scotty F is no longer getting credit for great recruitment.
Welcome back DES.