Just FYI. Natural Gas is not carbon monoxide. Found out the hard way. If you have a gas leak, you will need to do the soap on joints or get a natural gas “sniffer.” Fun fact, if the leak has constant pressure, you can find it with a open flame. I know insane.
Anyway, at this point, I wouldn’t rule it out as part of the problem if you do have a leak.
Based on some of the posts. You should be collecting all your records and checking out other doctors. While this isn’t normal. In my area it’s normal to write this off as “aging” and a weight issue. My wife has something that makes her blood not collect oxygen. Not always an iron deficiency, but sometimes. Needed to see a blood specialist to find that out.
Good luck. But you have to become your best advocate and almost do more research than any doctor has time for any 1 patient.
They do. They hide it as an SOS system. “Only used in case of emergency.” It’s connected to GPS, sim like a cellphone that has at least 4g cell service to “call emergency.” I think Chevy used their Onstar connection. That’s always on, and the data text files can be sent without interrupting that service.