> The IRS, for a time, would cut off your call if their wait system was too busy. That's a critical system in kafkaesque hellscape.

Now you're just on hold indefinitely, and eventually the offices will close, so you can either hang up and wake up early to call or just stay on hold overnight maybe? I had to call them for something back in March, and even waking up and calling at like 7:01 AM (a minute after their phone lines opened) I was on hold for half an hour.