Why do FP games last so long

[Dakota]

I can't compare the two, since I only call FP, but the length of a 7 inning untimed FP game depends mostly on the skill level of the players.

A young B travel squad or an unskilled JV squad may take 90 minutes or so to complete 7 innings. Sometimes longer if neither team has any kind of pitcher.

But, if we leave low skill level walk-fests / drop fests / grounders between the legs fests out of the equation, a pair of good fast pitch teams can complete 7 innings in anywhere from 55 to 75 minutes. Occasionally a bit longer.

Most of the wasted time is with general dawdling, which is entirely within the umpire's control, not with live ball non-action.