I would add here the potential scaling issue - holidays were a dry season - less meeting. So if they have some automation for scaling down to reduce cost, it may have bitten them in their arses now.

People came back to work, and most of them start around the same time (US wise at least).

Hence kids - a vital lesson for all of us - don't start the call at a full hour, give it 3-7 min to make your coworkers confused and give some time for the systems to auto-scale ;)