Anyway, in this case with those cues in Broken Arrow, I think it's best to have it like it is, regardless how good they would sound combined ... simply because one cue is already 15 min, and making that even longer I wouldn't see the point in (to name one reason).
I dont think running time is important for a cue, if its 15 mins long in the movie thats how Id like to hear it But the split works well for listening purposes.
Check out the Butterflies sample - notice the new instrumentation? Better hold onto your expanded bootlegs if you want the alternate mix.