What does the cryptic crossword clue "Estranged cadet a 'Neil Armstrong' returned for a bit (9)" mean?

The definition is "Estranged". The wordplay uses a hidden word. Hidden reversed in caDET A NEIL Armstrong. The answer is ALIENATED.

Estranged cadet a 'Neil Armstrong' returned for a bit (9)

Independent Cryptic #11740 | 7 Down | 2024-05-27 flower