B6 has block or better per leg. So I’d expect that to stick. But no major airline has a min calendar day. Not sure how likely B6/B6NK is to achieve an MCD rig in a CBA/JCBA if nobody else has it. But, rig improvements need to happen (namely 5/day increased), as well as improving QOL items that are negatively affected by increased rigs (namely commutability) that need to be there too. To be clear, I’m not talking specific to Europe flying…I’m more talking about general rules.