Would the Saltire beflown below or level with the Union Flag? If below, would it fly level with the US flag or below it but equal with state flags? I ask because US states and the countries of the UK seem to be in analagous positions, dependent, subordinate, and discreet political units.
Can't speak about how its done in the Staes, but in Commonwealth countries the rule is fairly simple. There is no distinction regarding the height at which flags are flown. What distinguishes their "seniority" is where in the group they are flown. If you have an even number of flags, the "senior" (meaning the host flag) is on the left when looking from the front. If an odd number of flags are being flown, the senior flag is in the central position.