Make some connection with unfinished case (6)

I believe the answer is:

attach

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'make some connection with' is the definition.
I can't tell whether this defines the answer.

'unfinished case' is the wordplay.
'unfinished' means to remove the last letter.
'case' becomes 'attache case' (attache case is a kind of case).
'attache' with its final letter removed is 'ATTACH'.

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(Other definitions for attach that I've seen before include "Fix to something else" , "Join; seize (legal)" , "Document carriers" , "Add or join to" , "Secure" .)

I've seen this clue in The Irish News.

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