sequential OB6 and REV2 use NRPN but Logic is only recording midi notes
when recording e.g. filter curves, Logic is not considering it.
Ventura 13.6.6, Logic Pro 10.8.1, OB 6 and REV from DSI/Sequential use latest OS
The manual also tells you, you must allow sending any cc or NPRN (sorry I have only manual v1 available, but should be similar to v2) :
Global settings > 5. Param Xmit:
You may read the Appendix as well:
NRPN Messages
The Non-Registered Parameter Number (NRPN) MIDI messages are
used to transmit and receive both global and program parameters. They
are transmitted when MIDI Parameter Send is set to NRPN in globals,
and received when MIDI Parameter Receive is set to NRPN in globals.
The messages are handled in standard MIDI format using the NRPN CC
commands in running status byte format. (...)