You need to read or re-read Mooney's WC Testimony. You're making assumptions. Deal with the facts. That is usually your M.O.
No assumptions. GH's testimony about the phone/iights relates to the moment of the assassination. We know Baker and Truly took the elevator up in the immediate aftermath of the assassination before Mooney took his elevator ride. So the power must have been on at that point. Thus any alleged power outage per GH must have been of very brief duration if it is back on when Baker and Truly arrive at the elevator within a couple of minutes. In your bizarre scenario, the power would have been off at the moment of the assassination, back on when Baker and Truly ride the elevator a couple of minutes later, still on when Mooney takes his elevator ride from the first to the second floor even later, but then gets turned off again just as he reaches the 2nd floor. There is no conceivable reason for any conspirator to be turning the power off and on in the building for a few moments in the aftermath of the assassination. What would be the purpose? How would they be doing this?