Yes, I was referring to streaming video
In the UHD BluRay disc world all DoVi content is profile 7, which is indeed a base HDR layer compatible with the UHD BD standard (which may or may not be somewhat different from how you'd encode HDR10 for streaming, not sure), plus a second HEVC stream as an enhancement layer (as opposed to just metadata like Profile 8).
https://www.dolby.com/us/en/technolo...les-levels.pdf