Yes. The idea is that we would insert “walk” legs for transfers that are actually routed through the road network (doesn’t happen in the current version), and that we do not insert “walk” legs for transfers that are modelled in the GTFS feed.
This is not set in stone, it’s just what it is at the moment.
Do you have a suggestion what it should be like, and why? Note that modelled transfers don’t always actually involve walking on the road network – they can also be completely inside a station building.