My father, back in the 90s, got into a fist fight with 2 guys over this, they had a boom box, he got stitches because one of their girlfriends came up from behind and hit him in the head with the radio. He was hot tempered. Glad you weren’t drawn into a confrontation and used your head.
My wife would notice in a few hours, and be panicked in less than 12. Work would notice in <12-16 hours weekdays, <60 hours weekend.