2x inverter T-series + 4x string ???

[Agent848]

Hello. I have a problem. I have a T10-G3 converter.
I have the first srtring of 12 pcs Hyundai 410W, Vmpp - 38.8V, Impp -10.57A, .
Second string 15 pcs JaSolar 460W Vmpp - 42.13, Impp 10.92. For this inverter it is not a problem on two MPPTs.
But I am expanding by 2 new strings of 12 pcs Hyundai 410W Vmpp 34.4, Impp 11.93. I bought a T15-G3 converter. But I find that it probably won't work with 4 strings. Each field has a different orientation and a different slope. Can I connect parallel 400V T10 and T15? The first converter 2 strings and the second converter 2 new strings . Do I have to take DTSU666 twice? Or just connect the RS485 pins 3 and 4 in parallel. Or what are the options? Thank you