[Rich]

Originally Posted by PocketSidewalk

Good point. So the spot of the IFP becomes the basic spot, and fouls by the offense behind the basic spot are penalized from the spot of the foul (i.e., All But One). Even though the penalty for IFP might be declined, the spot of the IFP would still be used as the basic spot for any other fouls committed during the down.

But back to my earlier question:

If Team B declined the penalty for an IFP and accepted the penalty for a second foul by Team A, would the loss of down aspect of the IFP penalty still be enforced, or would the down be replayed?

The down would be replayed if another live ball foul (with no LOD provision) is accepted in lieu of the IFP.