Theoretically, this is what Unmix is for. From the manual:
“Unmix is essentially the same as the Clip mode, however no effects such as dissolves
or speed changes will be displayed.”
But I tried it, and in Unmix the clip still plays back at the speed in the conform timeline.
I would personally love for Resolve to get even simple frame blending, so I can just bake in speed ramps on render and not rely on FCP to do it.