It is hard to know what kind of thing you are referring to. Please give a specific example.
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It is hard to know what kind of thing you are referring to. Please give a specific example.
If you mean "at extent", then no.
There's one example on fraze.it (see below), but it's wrong because it lacks "the" before "extent", and it's not a use of "at" with "extent" anyway because the "at" goes with the preceding verb "hint" to form "hints at".
A broken golf buggy, presumably used to get around below ground, hints at