I have come across many sentences that appear to use 'intact' as an adverb. For example,
Suppose that both segments arrive intact at B.
However, in the dictionary, 'intact' is listed as an adjective rather than an adverb; 'intactly' is the corresponding adverb.
Why does the author not use 'intactly' here?
Suppose that both segments arrive intactly at B.