I have no kind of benchmark as I’ve not heard anyone requesting to pass me, mainly as no-one has passed me!
Haha, is that a challenge? I promise you’ll come off worse when I t bone you off at the first corner! 😉
Seriously though, you mainly ride degla don’t you? Not surprised you never get passed, everyone I’ve ever seen there is slower than the shifting of the continental plates! Just shout “on your right” and pass on the right when it’s convenient enough to get past without too much trouble…