Sorry if this has been covered before - been trying to work out the complexities of the apparently soon to be extinct SAS/airbaltic tie-up and I am no closer to working out my lounge access privileges (or not) on the following sectors, as a Star Alliance Gold (Air Canada).

MAN-CPH. BT flight number, operated by SK.
CPH-RIX. BT operated.
RIX-MUC. BT operated.

All this weekend. Any help appreciated