I too am a podcast addict and listen at 2x-3x on most of my podcasts (the non fiction ones).

According to Pocket Casts, variable speed has saved me 281 days, 2 hours. Removing silence 3 days, 23 hours.

(@rustyshelf, if you're out there, how do I rank? :-) )

2.2x and silence skipping. I've saved 180 hours according to podcast addict on the silence skipping alone and probably another 400 on speed.

I'm at 42 days 5 hours total. I love love love Pocket Casts stats, and think they should be more prominent.