Wine devs do not want to work with people who have looked at ReactOS[0] (see at the end) so any collaboration is one-way (or by ignoring the guidelines) and the likelihood of the two projects merging is zero.

[0] https://gitlab.winehq.org/wine/wine/-/wikis/Clean-Room-Guide...

Surprised no one responded to the 7th comment in that linked email thread, the author brought up a good point about making progress without using any disassembled windows binaries.