Oliver is sporting a stubble/beard while on set? That just confirms Buck's injured and is recovering. And most likely at his loft since the waiting area is not the usual Buck's loft.
Eddie will have his own version of Buck's Lucy. Her character's name is Marisol played by Edy Ganem.
If Lucy was Buck's female firefighter version, Marisol could be Eddie's female version as a whole. Military background, single mom and all. The actress Edy is a mom of two btw.
Edy follows both Oliver and Ryan (and his wife too) and Oliver followed her back. Oliver might had a scene with her as well hence the following on Insta. Maybe she's a paramedic they met during the blimp crash.
It'll be really interesting to see Eddie and this new female character Marisol and Buck's involvement with it.
A love triangle? I've been saying a possible love triangle could happen for both Buck and Eddie for quite a while now. It would be totally fun to have them into that love triangle chaos. But my money's on Eddie's female version just like with Buck's Lucy.
Bobby or Buck or even Chimney are not gonna get hurt. Get over it. Bobby is going Florida with Athena for a vacation while Buck was seen filming in his uniforms an awful lot same with Chim. No major character is gonna get hurt too early of the season.