"Battery boost" question

Rarely do I disagree with Doug so here goes. Using the boost switch on a DP is like trying to jump a car with a cheap set of jumper cables. Will not start the car at first but after several minutes of putting some amps into the dead battery the combination has enough amps to start. Unfortunately the boost system on a DP is like a set of cheap cables as it can only supply less than 200amps which mainly goes into the dead batteries from the house batteries. Trying to start a minute later has done a quick charge on the dead batteries so now there is enough combined amps to turn the engine over. Doubt the OPs charger was more than 20 amps so even after an hour on two batteries that are 900+ amps each has not done much. I 'm actually surprised that it started after just one minute as the cables going to the bird are much smaller than the starter cables.
I have 00 welder jump cables that plug into the front of my truck(do not have to raise the hood) which can handle the 2000 amps from my two diesel truck batteries and rarely do I have to wait to start anything unlike the cables on a DPs boost circuit .