Question about PolarPro Osmo Pocket Wifi Tripod Adapter

No!
I have the original wifi adapter and the original mic adapter. They can NOT be connected in series. It fits physically, but is not recognised by the osmo.

In order to be able to use the USB port at the foot end (or also via a holder) as a mic input, you need the corresponding adapter from dji, namely the "Dji Osmo Pocket 3.5mm Adapter". No other adapter works, not even from another Dji product. This article costs Fr. 55.- at Digitec as at other suppliers. In my opinion, this is how Dji rips off customers.