It’s nearly 3:00am local time, it’s a fast line, youtube is a pain, and my ears might not be working correctly...but I wouldn’t consider that a glissando (a continuous slide between two notes). It sounds like a clearly defined 5,6,1,2,3 C major pentatonic run starting on G above the staff. The middle line Bb starts the ritard into two sixteenths (g, a) followed by a 32nd note triplet (c,d,e) ending on the high G fingered OlXOXlOXO. There’s a short lipped portamento into the G (bends slightly into it) and he dismounts moving 4,3,2, etc. that G fingering might be my new favorite for alto. I also think the line sounds better if the G is hit cleanly, but please don’t take my personal preference as any sort of knock on this dude. He sounds fantastic! Definitely going to try that G fingering on tenor tomorrow.
Somebody please fix me if I’m wrong on how I’m hearing it or my proposed fingerings, as it was difficult for me to hear such a short and fast line on a tune I’d never heard before seeing this thread and commenting.