Apex 300 with SolarX 4K and Hub D1

Nowhere in the promotional information did it say these two accessories were not able to be used at the same time. I bought them thinking I could charge from solar and use AC and DC power at the same time. This is not the case. The xt60 ports are almost useless for solar charging, plus one of them will be taken by the dc to dc charger. I would like to know if there is a junction box in the works to make this possible.