Parents are flying LHR BHD today on BA1412, and they’ve just been told they are now stopping in Shannon (distance LHR SNN BHD is 620 miles - ie twice the distance of the original flight). They are told this is to drop off two pilots in SNN. Have not heard of this before. In general, does anyone know what the rules are for this with regards to rebooking, compensation, alternatives. Avios club Europe ticket for reference.