You can use a usb dongle that convert from qc2 or qc 3 to dash charge. It will be 5A instead of 6A (something like that). I have one and it work well.
Google : yzxstudio qc to warp
Yzxstudio is the brand. Pay attention and take the last.
You need two OnePlus cable. The dongle is input usbC and...