Bond is limited to one way communication (sending commands only) by the remote control module your fan currently has installed. There are remote control modules which allow Bond to know the state of the fan/light and provide that feedback so if you tell it to turn on and it is already on it won't turn off. Bond also makes their own module now that provides that capability as well.
Currently Bond doesn't work with Hubitat natively so your solution is great since you had the wiring needed already in place.
