I think that there needs to be some "time-cap" associated with the handshake protocol. If I don't hear back from step 4 within 24 hours or some other agreed tim

I think that there needs to be some "time-cap" associated with the handshake protocol. If I don't hear back from step 4 within 24 hours or some other agreed time, I feel it'd be safe to assume the deal is off.