I came across the following sentences:
Its personality, at the moment when I was about to leave it, seemed to have detached itself from its inhabitants and all the human memories associated with it, and to have become endowed with a friendly charm of its own.
As usual, these sentences in The New York Times appear; and they appear together numerous others where the same structure occurs: seemed to have [...]ed.
Can someone clarify if this structure is grammatical?
Or should we reword the above sentences replacing the words "to have combined", "to have broken" and "to have detached" with, respectively, "to combine", "to break" and "to detach"?