合う => do something together N3
うち (で/ から) => Among, within... N3
Scope
[合「あ」]う => To do A together/mutually N4
Secondary Verb
うちに => While... N3
かのうちに => right after; as soon as N2
Simultaneously
か~ないかのうちに => right after; as soon as N2
うちに => While; Before ~ N2
のうちに => Within... N3
Limit
か~ないかのうちに => Right after A, C N2
Time, Situation
~こと請け合い => I guarantee ... N1
Happens next
どちらかというと => Overall, it can be said N2
Evaluate
~ぬうちに => While not....; before... N1
Time