Can someone explain the reasoning behind the game ending with 1 second left on the slow motion replay clock.

dbg said

as I understand it, this is to account for the delay in the official starting the clock at the beginning of the play so they don’t also have to also review when he started the clock creating even more issues.

Click to expand...

This is how I understand it as well. It's almost like how they explain when the don't throw the delay of game flag as soon as the clock hits 0:00. It's to account for the time the official to see the clock expire then look to see if the play is off or not.