Not sure about cochlear implant, but with a hearing aid you can get bluetooth hearing aids, They are pretty new and may not support all bluetooth devices. You can get hearing aids with "tv connectors" interface That connect to the audio out of a TV and transmit audio from the TV to the hearing aid, but these may not meet your needs as they often disable the "aid" and only work
in AId or TV mode.
You might also want to consider a bone conductive headset and a bluetooth transmitter. The bluetooth transmitter would be connecting into the audio output of vhf radio
then would transmit audio to the headset. These go over the ear and work
with or with or without the hearing aid. They allow you to hear your surroundings and hear the audio from the bluetooth device. Check out https://aftershokz.com/
for their headsets. For a transmitter something like this will work. https://www.amazon.com/Miccus-Blueto.../dp/B00713RSE0