Generator and converter charging together

[Archer2]

Why complicate things? Since the generator has its own small motorcycle battery that it charges when running, the only thing you have to worry about is the genny batt running down between uses. So just slap a motorcycle Battery Tender plugged into the coach AC.Mai don’t see that there is anything to be gained by using the house batts for the generator. For one thing the existing battery charger (converter) senses the battery voltage to know when to charge and when to back off. If the generator is supplying voltage to the battery the converter could sense it as battery voltage and stop charging.
If push came to shove and the generator batt runs down, a set of jumper cables will get it going.