I’m going through now and watching the ones I missed before, and I think only eight have the double credit. I assume you read that sentence the same way I did,

I’m going through now and watching the ones I missed before, and I think only eight have the double credit. I assume you read that sentence the same way I did, which was the first video only had one credit, but all subsequent videos credited both. But I think he meant the first one only credited him, he just used the same template for a while, and started putting in a double credit near the end.