Welcome @Jack_Poirrie_1955 I appreciate you use this space to share your concern regarding the extra time in Zwift Power. This is Juan from Zwift.
I moved toward your account and confirmed that your time for Stage 1 | The Zwift Big Spin 2024 is different on Zwift than on Zwift Power.
You reached 1h 10m 39s on Zwift, meanwhile on Zwift Power 1h 16m 16s. This is due to the difference in the way Zwift and Zwift Power record the ride. On ZwiftPower the time is from when the starting countdown timer reaches zero to when you cross the finish line. This is the time recorded in the fit file the ZwiftPower reads. On the other hand, in Zwift, the elapsed time (displayed on the game screen) doesn’t start until you cross a double white line as you exit the start pens.
I hope this information has been useful. If you experience a different scenario and this is not the answer you were looking for, please feel free to let us know with more details. The more details you add, the better we can help you. Here you can contact us.