If I (FB Plat) book a single ticket with KLM that includes a flight to AMS and then a connection on Thalys from Schiphol, will they let me into the Schengen Lounge after the flight, before exiting the airside area?

The flight arrives quite early, so I would prefer to take a later train, if I can wait in the lounge.

HBO of course. Thanks!

Edit: Sorry, I just saw the "Arrival lounge" thread, so if I have access as an arriving FB Plat (I wish I knew about this many years ago!) then the connecting train is just an extra detail.