I guess that is the problem of adding time constraints (75 minutes) to a game whose rules were written without time constraints taken into consideration.
If the offense has its one conference per inning remaining, then it should be allowed. I'm imagining that the umpire wasted more time arguing about whether the conference was or was not allowed. Especially if he allowed the conference but kept it very short.
"Sure you can have the conference [1 Mississippi, 2 Mississippi...] Okay time to play ball. Batter up."
