As far as I know pypilot will only respond to NMEA0183 APB sentences that are sent straight to its 20220 port; it will not respond to, for instance, navigation.courseRhumbline.nextPoint.bearingTrue values in the SignalK data store. So far I have not been able to generate APB messages with the signalk_to_nmea0183 plugin. So in my case the only option was to configure opencpn to send those RMC and APB messages to pypilot TCP/20220 with a data connection, and I would suggest you attempt the same from AvNav.
Separate from that, you are aware of the possibility of signalk to synchronise two instances with each other? If only to offload pypilot I would only connect to one signalk server, not two. Call it superstition if you want, but the latter would give me an eaky feeling.
Separate from that, you are aware of the possibility of signalk to synchronise two instances with each other? If only to offload pypilot I would only connect to one signalk server, not two. Call it superstition if you want, but the latter would give me an eaky feeling.