Domestic, pre-cleared no security, doable?
What is the 45 minute timeframe that you refer to? Is that the time between scheduled landing and scheduled departure? Scheduled landing time does not mean "at gate" or "deplaned". Doors close 10 minutes before scheduled departure time on the next flight. 45 minutes means getting off one plane and running to the next departure gate as the shuttle bus between terminals would not be that quick. Sounds difficult to me.
Only if the stars align or you incoming flight is early and/or your departure is delayed. Sorry to be negative but I️ speak from experience as we had to sprint between F and A more than once with 55-65 min connection when our inbound was just. A few minutes late.Edited: 14 November 2017, 02:49
Went through LGA instead, had an hour and a half.
Glad you found a better option: