No. This is forbidden. Just like COLOR, you must unify the frame rate within the project or treat the differing framerate streams as separate projects. You will not be able to track or keyframe clips of differing frame rates, and round trip in/out points will be corrupted, just as they are in Apple FCP/COLOR flow.
Guessing that Resolve would do a pullup is a remarkable leap of faith. It is possible to display and play out 23.98 sequences at 2997 with added 2/3 cadence, but these options must be specifically configured.
If you don’t believe me, read the “Conform” chapter in the manual. You will find the following advice:
Important: When preparing edited sequences for DaVinci Resolve import, do not use media with mixed
frame rates. Resolve treats all media as if it were at the frame rate of the project, so importing a mixed
frame rate sequence may produce unexpected results.
jPo
You mean “Old Ben”? Ben Kenobi?