None
There are just too many coincidences:
1. This is a scam; don't fall for it.
2. This was the first interview. I took leave yesterday and left work early, yet I still got stuck in traffic.
3. The wildly fanciful manager thinks that simply finding any open-source project on Google is enough to take on a customized project. Does he have low blood oxygen, depression, or perhaps dementia? He completely treats people like idiots and toys with them.
4. Fortunately, I didn't miss interview opportunities with other companies. I'm so happy I feel like humming a song.