Can I connect an RLX-FHS to an RLX-FHE?

Can I connect an RLX-FHS to an RLX-FHE?

You can have an RLX-FHES (Ethernet with serial encapsulation) communicate to an RLX-FHE (Ethernet), but cannot have an RLX-FHS (Serial) communicate to either a FHES or FHE radio.