Question 2: what is the general context of the tapes?

I suggest that this much is clear [brackets mark what is supposition about what is not in the released 8 minutes]

[1. After discussions had been initiated by one side or the other, the first stage in the discussion was the question of Grewal's crossing the floor and what (if anything) he could expect once he did this.]

[2. This discussion never reached a conclusion for reasons that are unclear.]

[3. Murphy, believing that Grewal is still interested in crossing the floor at a later date, suggests a way to keep that option open.]

4. Murphy suggests that Grewal vote against the coming non-confidence motion and claim that he is doing it because his constituents don't want an election.