The Sunday challenge!!

Ok. I made a mistake. I admit it. I sent BNB on the binance smart chain to the BNB app on my Ledger wallet via meta mask. Problem is.. the BNB app on ledger works with the binance chain and not smart chain. I now realize that I should have sent it to the ethereum app. So now my BNB is stuck. I can see it..when I open meta mask with the Ledger...but I can't send it because the meta mask can't sign to the ledger wallet due to the BNB having a 0x address and the BNB app having BNB addresses....if any of you IT savvy techy types can figure out how to sort this I'll give the first to sort it half a BNB... currently worth a hundred and thirty five quid.