SDR latency is a little loner than conventional , But , as is , its not possible for say
a two way connection , using , Flex SDR<> Flex SDR and the Chat module
probably a case of unexpected consequence ..
Clarification from Jose ,
3 May 2021, 18:48:23 (yesterday)
to VARA HF Modem
Yes, with Dwell Trimode 4.5 seconds it would be possible to do a simple change to VARA HF to connect two SDRs: SDR<->SDR. Although the latency in this case would be about 1 second due to both VAC.
But Winlink demanded 4 seconds maximum Dwell, so only is possible SDR<->Conventional or Conventional <->SDR.
In VARA FM or VARA SAT is possible SDR<->SDR because there is no DWELL time requirements.