In NFL games the clock continues to run during non-play time like the offensive line resetting after a completed pass or a run or a sack so if your stripping out that time as well because nothing actually interesting is really happening you can get below the nominal 60 minute of actual play time.
Yeah, this. The condensed games actually include some time where the clock is stopped, too-- eg, the couple seconds leading up to a snap, or whatever. My least favorite part is sometimes they cut out what a penalty was called for and what the impact was.
Got it, thanks. Wow, that is an aggressive approach. IMO watching the players get back in formation, etc. is at least a little bit interesting in part because watching that process helps you predict what is going to happen after the snap.
