that, i think, is the part i am not sure about- I thought anyone who has the floor can hand it off to anyone else
Ooh a real one?
The rules permit a senator, or a series of senators, to speak for as long as they wish and on any topic they choose, unless "three-fifths of the Senators duly chosen and sworn"[1] (usually 60 out of 100 senators) brings debate to a close by invoking cloture under Senate Rule XXII.
So Cruz can hand off to Lee who can hand off to Paul, etc. It will be fun.