For <An> Interview

[GrapesOfWrath]

"He was brought in for interview."
"He was brought in for an interview."
"That question could come up during interview."
"That question could come up during an interview."

I am confused about the countability of "interview". Help?

[5jj]

1a "He was brought in for interview."
1b "He was brought in for an interview."
2a. "That question could come up during interview."
2b. "That question could come up during an interview."

I am confused about the countability of "interview". Help?

In the 'a' versions, the noun seems to have a verb quality - for interview = to be interviewed, during inteview = while being interviewed.

In the 'b' versions, the noun has more of a noun quality - interview - a formal meting to assess somebody's suitability for a job, course, etc.