I cannot remember fully how the eTrex and Edge worked. When adjusted to 'Delivery van', does it calculate ETA based on the road speed limits, whereby adjusting it to 'Bicycle', calculates ETA on 20 kmh in the city and 25 kmh in the countryside?
If its adjusted to 'Delivery van' the displayed ETA is way ahead of a bicycle.
Is this how I remember?
When using a Route with loads of Viapoints, I had the unit adjusted to 'Bicycle' to get a sensible ETA at the next control.
IIRC it was 'Final ETA' on the data field list.