Garmin Glow 2 now what?

Mark.
With your background in IT, you would have far more knowledge of these things than most people on here., I would imagine!
I would have to try and connect devices or maybe even read the instructions.

Why would you try to add a Garmin Glow to devices that already have GPS as standard?

Using Bluetooth will also put a strain on your device.
I have a Samsung Tab A8 and a Samsung A53 5G which I used this year on my travels through western and southern Qld. with no problems.
I also have two different USB GPS devices that I use on my Desktop and Laptop computers for when travelling.
I see no reason why you need an external GPS on any Samsung devices as the specs all appear to be AGPS.

Do you really need a Bluetooth GPS receiver?

My Glow 2 and a couple of older Bluetooth receivers have been hiding in a box somewhere for a few years.

Dare I say it?
The less than $10 Aliexpress USB GPS devices perform better when connected to our Windows based notebooks.

Our Samsung Galaxy A9plus, A9, A7, A7 Lite tablets plus a couple of older Lenovo tablets and all our phones receive GPS signals without any cell service or WiFi involved.

Sitting here in NZ inside our motorhome the A9plus GPS circuitry warm boots in about 3 seconds and reports 43 satellites in view.
A quick measurement indicates a 0.25W (60mA) energy increase with the GPS turned on.
All but insignificant.

As mentioned in a few posts above the A9 + has multi satellite system capability and does not require a internet connection once you leave a town . Battery drainage is minimum ,possibly less than staying connected to your Glow. Image shows an A9 locked into 46 satellites on Oziexplorer . Only 3 satellites a require to determine a position on earth and a 4th to determine the time .