Autohelm 100/300 autopilot

I understand that the eS127 supports the SG3 autopilot using the Seatalk to SeatalkNG converter.

The existing Autohelm 100/300 and the SG3 autopilots both work perfectly with the ST50+ instruments and control heads using Seatalk.

Can the eS127 connected to the Autohelm 100/300 using the Seatalk to SeatalkNG converter control the autopilot?

At the FT Lauderdale show, Raymarine tech said that there is no difference in the Seatalk between the Autohelm 100/300 and the SG3.