On a phoneline service that I have to call about twice a month, you also get a frequent click and a second-long pause in the music, that makes you think you’ve connected to an operator. Given how the service is outright malicious to its users, it wouldn’t surprise me if that was hard coded into the system to keep callers on edge.
The is me with my PhD thesis. I wrote it, submitted it, planned for an absolute grilling in the Viva, got waved through the Viva with just minor corrections for grammar, went overzealous with corrections, submitted for review, got accepted, finally graduated.
It still makes me sick to look at it on my bookshelf.