Just wanted to confirm that this works!
I contacted Deye support via email and 12 hours later they remotely upgraded my data logger from firmware 1.6.2 to 1.7.2.
After the update, I enabled Modbus TCP on Link2 (port 502), keeping Deye Cloud running on Link1.
I then installed the Solarman integration from HACS, configured it to use TCP port 502 with the deye_hybrid.yaml profile, and everything worked perfectly!
My inverter is a Deye SUN-6K-SG05LP1-EU-AM2-P.
All data is now available locally in Home Assistant!
Thanks for sharing this solution!