Raymarine forum

I would like to know if the c-80 & c-120 can be interfaced so I can use the radar and chart plotter at either station

Welcome to the Raymarine Forum draudio,

While it would be possible for a Ethernet network E-Series Classic MFDs (E80, E120) to share all system data and resources, it is neither possible for a pair of C-Series Classic MFDs (C70, C80, C120) nor for a C-Series Classic MFD and E-Series Classic MFD to share all system data and resources. Communications between a C-Series Classic MFD and any other MFD (including another C-Series Classic MFD) is limited to alphanumeric GPS, instrument, system state, and navigational data via the SeaTalk or NMEA 0183 communications interfaces of these MFDs. If settling for this lesser capability, it would be recommended the MFDs each be interfaced to a powered SeaTalk (not SeaTalkng) bus.

I just sold the C-80 and C-120 and am replacing with an E-80 and E-120
This should solve my situation

Noted.