The strike team deal with a lot of episodic storylines as well in the first couple of seasons and there are instances where Vic's storyline overlaps with Dutch/Claudette and others at the station.

The show is constantly building on itself, it's definitely not a procedural that resets to a baseline at the end of every episode but yeah it's also not accurate to say it's fully serialised.

I think it's a good balance for long form storytelling, it gives the characters time to breathe, the world feels more realised when it's not constantly about the high stakes main plotline.