うち

Question 1

か　ないかのううちに

Answer 1

“Right after A finished, B.” Feeling of almost at the same time. Used with momentary actions or changes.

辞書形/た形　+　か　+　ない形　+　かのうちに

Question 2

うちに

Answer 2

1 ~ “While A, do B”. There is a time limit, so need to do B while A is still occurring.

名　＋　うちに
辞書形/ている/ない形　＋　うちに
イ形い　＋　うちに
な形な　＋　うちに

2 ~ “While A, B happened/changed”. B is not intentional.

辞書形/ている/ない形　＋　うちに