Batter Interference Question

[nickrego]

Getting ready to move from CA to GA, so all my rule / case books are packed.

Today, I had a situation that was almost a Batter's Interference, but I felt the Catcher gave up because the Runner had returned to 1st base, rather than because the Batter had stepped in front of him.

Anyway...

I know that for all situations, other than less than 2 outs with the Runner attempting to score from 3rd, the Batter would be out, and all Runners return on Batter's Interference.

But like today, what if the pitch was Strike 3, and the Batter was already out (1st out of the inning), and then caused Interference in a situation where the Batter is supposed to be out and the Runners returned ?

Thanks in advance.