Can anyone verify this teaching about jhana, from sutta source or personal experience

From Thanissaro Bhikkhu (embedded time in the link) What I am specifically curious about is about the stopping of breathing in 4th jhana that he explains. For me personally, I have been able to experience weak rapture on command, what I know as a jhanic factor but I didn't even think i had experienced even the 1st Jhana. I have had some powerful absorption meditations before where I have stopped breathing, and like he said as the end of the question (it's a Q&A section) where people recognize they stopped breathing and kind of "ahhh" then jump out of it. So is that it, is that actually 4th jhana?, is the Bhikkhu incorrect?, is my experience incorrect (you cannot answer that of course) The way I originally learned the Jhanas were through Mahamudra tantra, where it is explained "the mediator stops breathing resembling a dead person" but I always assumed these meditations where I lost my ability to breathe and subsequently jump out of it were nowhere near even the first jhana, let alone the the stopping breathing like what was explained in Mahamudra teachings.I just thought it was just me having some sort of meditation issue, which of course are myriad and varied for all.