Strava doesn’t use Normalized Power. It’s a ripped off of xPower, Dr. Skiba and PhysFarm Training Systems. Ripped off because there’s no credit given. Xpower is 25 second rolling average as opposed to 30 second rolling average for Normalized Power. The rest of the algorithm are the same.
Gaps in recording, ride status, are automatically corrected when uploaded to Garmin (from Garmin headunit), Training Peaks (WKO), and Trainer Road. Raw files are not corrected when uploaded directly to Garmin and Training Peaks. Workout files from Trainer Road are corrected not raw. WKO maintains the raw dataset but ride status are based on corrected.
Gaps in recording IS NOT Garmin Smart Recording. It’s Rx or receive fail where it just didn’t pickup and usual one second in duration.