The most common and most likely answer to this crossword clue is the 11 letter word CLEAR-STORY
C
L
E
A
R
-
S
T
O
R
Y
Buddy explains!
The straight part
We know that "upper level in church" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case upper level in church = clear-story.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.