Both IC-7410 and Soft66LC4 can be controlled simultaneously from HDSDR.
Soft66LC4 is controlled via ExtIO_Soft66ADH.dll.
And IC-7410 via Omni-rig, using IC7410.ini.
If you click any place on the waterfall, both Soft66LC4 and IC-7410 are tuned to that frequency, and if you wish, you can monitor both the sounds with the same CW pitch, if you care for the LO frequency calibration.