or just plug it in, and upload maually I do this, its less than 5 sec's to do, strava, remembers the fold so it opens the correct one, in my case sorted newest to oldest so its usually the first one or three files, I don't use connect anymore, rwgps is the same. Its not rocket science.
From a couple of wee tests I done I found it was about 3 secs on rides 7-18miles and about 1 sec on segments (which is a large proportion of stupid short segments), there was a discrepancy on max speed and elevation but nothing Id worry about ;-)Phones are much less accurate than the Garmin.