Yes - test it with Garmin app to satisfy yourself its working. When off or not connected the resistance will be higher.

Cool, thanks. (Wouldn't you know it, I finally set-it up & we're predicted to have lovely weather for the foreseeable future!)

The resistance floor of the trainer it pretty high. What this means is that unless you are a big rider producing equally large power numbers you will spend your time in small gears. Most trainers do work better under these circumstances but if you expected to be able to ride it in a 'normal' gear you will find it very hard going.

Got it. This makes sense.

Thanks. Been riding/racing my entire adult life but barely getting into smart training.