everyone might have different opinions about breath meditation, but one way to try and solve this is to read, study and compare over and over, all the sutta material regarding breath meditation, and jhana cultivation, and delve a bit into the deeper meanings of key pali terms.
As time passes, I'm realizing something: no two great teachers seem to agree on every single detail regarding breath meditation.
While that might seem confusing or daunting, I'm just deciding to accept that people seem to differ on views alot. That's life. I guess I'm saying, every one of us needs to find out for ourselves,
by repeated study, comparison of the source materials, and relating what we are reading about with our personal experience. Again and again.
That's my offering anyway