Originally Posted by ISTFlyer

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I don't know if you could fly 4 BA segments but if OSL-NBO is your general route that you fly, you could alternatively collect miles at BA Executive Club as a round-trip Y ticket on QR would give you 80 Tier Points and a round trip J ticket on QR would give you 560 Tier Points. With the COVID related reduced thresholds 2 Business Class round-trips + 4 BA segments would make you Oneworld Emerald which is the equivalent of QRPC Platinum.