I won’t put this out of the realm of possibility, as a Chinese sub did pop up in the middle of a US carrier battle group recently.
as a Chinese sub did pop up was forced to surface in the middle of a US carrier battle group recently
That event you referred to was over a year ago, and we still do not know the circumstances behind it. Nobody is talking about it, us or the Chinese.
Submarines, no matter what navy they belong to, as a rule are LOATHE to surface within sight of a potential adversary. I have never known of an American submarine to do it, ever.
I believe they were forced to the surface.