I've never personally had a radiology scan where two radiologists worked together on it.

I never had anything serious, just sebaceous cysts and fascia inflammation. On both of those two radiologists worked on them, and everyone was pretty sure it was not cancerous or anything. I think two radiologists are standard for most things where they may recommend a biopsy.

I asked about AI and they couldn't use the one they had on the cyst because it was not trained for ankles.

That just means the scans were easy to interpret and/or the consequences of error were not mortal. While that's most scans, the ones where we care about the most accurate results are the ones the AI is worst.