P090D-to-DC7909 adapter: Not just for EB150?

Hi. I’m curious about the P090D-to-DC7909 adapter.
It’s advertised as being suitable for the EB150 only.
I’m assuming a ‘7909 connector’ would be a standard size, so you’d think this adapter could connect a B230/B300 to the AC200P’s AC input port. But Bluetti indicates you need both a P090D-to-XT90 plus a D050S charging enhancer (which has a 7909 connector on the end) to link to the AC200P’s AC input port.
Can the P090D-to-DC7909 be used to connect a B230/B300 to the AC200P’s AC input port?
If not, I’d like to understand why.

I’ve tried it, it doesn’t work on my AC200P’s AC port but works fine on the PV port with a 7909 adapter. Because of that I haven’t bothered trying my D050S through the AC port since there would be some wattage loss going that route.

Thanks for sharing your experience Eric.
Makes me feel better that I chose the P090D-to-XT90 option when buying the B230. I have the D050S also, but hoped to use that just as a charger rather than having to swap it in as a secondary connection to the AC200P.
You also appear to have confirmed my suspicion that using the D050S between the two units comes with an overhead. So I’ll probably stick to connecting via the PV port
Thanks again for your input.