xfinity recordings completely froze my laptop

Hi, I was watching a show (Chrisley Knows Best, season 7 episode 19) on my macbook in Chrome and all of a sudden the screen went black and it froze my entire laptop. The audio played briefly after the freeze before stopping. I tried all 3 force quit options available on macbooks and none worked--I had to do a hard reset, losing my work I'd had open in another tab and application. I told my mom about it and she tried watching the same episode and the exact same thing happened to her, but on her iPad (and in a different state); she also tried it in Safari and the same issue happened. What caused this, how can I prevent it again and is it safe to watch my other recordings? I would like xfinity to investigate the recording to see how it is corrupt and why but their 24/7 bot was useless and I don't have time for a long phone call. Thanks.