My award LH reservation WAW-BKK-WAW in Business Class for 142.000 Miles is currently 105.896 Miles but it's on SWISS (SWISS return flight requires a hotel night in ZRH, because there is no late evening connection to WAW).
Alternatively, it's 200.000 Miles on reservation involving TG.

I enquired on the phone about added segments in the same zone (for example flying Europe to BKK return and it's possible to add BKK-SIN-BKK for no extra miles) and this rule stays.
Also, Senator Companion Award stays: 50% miles for the companion.