Making best use of Sto Chargers

[TheThunderbird]

Hello everyone :-)

I have a 7.3kW Genny (AC) and two chargers (60A and 45A).
One is working on service bank (6x120Ah AGM) , other on 2x200Ah engine bank (serving also winches, bow-thrust and windlass).

I want to make best use of AGM high recharge rate, using the TWO CHARGERS all at once on AGMs

I understand that an AGM charger can be 20/25% of nominal Ampp, so 60+45Amp does look just on the low side, and 60A really underscoring...

Q
Thus, shall I:

- apply both chargers on same terminals as one bank
- divide the banks (3+3, or 3+2) and keep the 2 chargers independent. ??

Well, I know that prudence and common sense do suggest 'BETTER NOT .. well, really??, and WHY??

batteries are seen by chargers as a utility absorbing current.
I hardly figure out current entering the other charger... (if OFF, maybe...)

The two-bank solution implies double Battery Monitor, and a rotating switch to put them together when in use (not under charge)... so I'd rather go on a single bank fed by 2 chargers...

My solar is just 25A, thus, as smaller (fractional ) bank could be better, in that regard (that A equal to 3% of the bank capacity being just good for floating the big bank)....

Comments welcome :-) (I don't want to burn, neither in hell nor afloat....)