1. BA568: J9 C3 D1 R0 I0 Y9 B2 H0 K0 M0 L0 V0 N0 Q0 O0 S0 G9
BA580: J4 C3 D0 R0 I0 Y9 B1 H0 K0 M0 L0 V0 N0 Q0 O0 S0 G9
BA570: J1 C0 D0 R0 I0 Y3 B0 H0 K0 M0 L0 V0 N0 Q0 O0 S0 G0
BA584: J7 C3 D0 R0 I0 Y9 B2 H2 K0 M0 L0 V0 N0 Q0 O0 S0 G9
No problem there; maybe the 570 is iffy, but that's the third latest of four.
2. Yes.
3. They should know, at the latest when you fail conformance in flight connections because your flight has already taken off. You may already have been rebooked at that point - when it happened to me I was connecting from Milan to long haul - but even if not, they can handle it all at connections.