I am flying DXB - DOH - MUC with the first segment in regional first and they second segment is business. The ticket is an Avios redemption through British Airways. As far as I know I am able to access the AS lounge in DOH as I am arriving on a regional first flight. We decided to book a layover with 12 hours and we thought about visiting Doha between the two flights. Will I be able to access the AS lounge even if I exit the airport between these two flights?