Trade / Exchange / pending question

When I use my trezor to convert some crypto into another we use some 3rd party exchange.
When our trezor show this :

Do we have to wait until the transaction is competed or the info has already been sent and we can unplug trezor ?

Note : I clicked Trade, exchange, Compare and choosed one provider, validated / accepted the transaction on trezor and clicked the SEND button on the pc…