Breaking and Entering draws from Riverruns?

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I hadn't really heard the B&E soundtrack before today but now that I listen to it I wonder if anyone else noticed that there are a few of the same melodies/sounds as on the riverruns, particularly the last one ("I'm a big sister etc etc"). The last minute of the soundtrack is the same piece that finishes the riverrun, except played on classical guitar. I also noticed parts of "Mowed Path" and some of the keyboard noises from "Flatz". There were a few other times when I heard something familiar as well...can anyone shed some light on this? Was it intentional? Am I NUTZ?SSSZ?