YOU SAID:
dave was went postal while working
INTO JAPANESE
仕事中にデイブは郵便に行きました
BACK INTO ENGLISH
Dave went to the post while at work
INTO JAPANESE
仕事中にDaveが投稿に行きました
BACK INTO ENGLISH
Dave went to post during work
INTO JAPANESE
Daveは仕事中に投稿に行きました
BACK INTO ENGLISH
Dave went to post while at work
INTO JAPANESE
仕事中にDaveが投稿に行きました
BACK INTO ENGLISH
Dave went to post during work
INTO JAPANESE
Daveは仕事中に投稿に行きました
BACK INTO ENGLISH
Dave went to post while at work
it is unlikely that this phrase will ever reach equilibrium