13 down
Allowed
to
take
caravan
briefly
–
that
is
assuming
posh
car
up
front
is
connected?
Not
so
(10)
Allowed to take caravan briefly – that is assuming posh car up front is connected? Not so (10)
hints
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hints
The definition is at the end of the clue.
How the clue works
The answer means connected? Not so — i.e. not relevant. Take IE (id est, "that is") wrapped around RR (Rolls Royce, a posh car placed "up front") to give IRRE, then LET ("Allowed") holding VAN (a caravan, briefly) to make LEVANT. Put IRRE and LEVANT together and you get IRRELEVANT.