Its a little confusing to me.
Michael and Roth meet - Pentangelli is a dead man, you dont object. So Michael should be planning on killing Frankie, right?
Michael and Pentagelli meet - Michael tells Pentagelli to settle troubles with Rosato's - Frankie agrees.
So what could Roth be thinking?
Ola calls Fredo - asks if meeting is on the up and up?
Roth fakes a whack on Frankie to setup the hearings trap.