Complex sentence: Over years of support from the Knott family, whose name is borne on multiple buildings on both campuses, both schools developed a working relationship, with students from the colleges, under some circumstances, being able to take courses on each other's campuses.
Split into simpler sentences: Over years of support from the Knott family, whose name is borne on multiple buildings on both campuses. Students at both schools, under some circumstances, are able to take courses on each other's campuses.