As per proviso to section 173 (3)
Provided that a meeting of the Board may be called at shorter notice to transact urgent
business subject to the condition that at least one independent director, if any, shall be
present at the meeting:
Provided further that in case of absence of independent directors from such a meeting
of the Board, decisions taken at such a meeting shall be circulated to all the directors and
shall be final only on ratification thereof by at least one independent director, if any
Kindly Note the word IF ANY
That means all the companies can call a BM with a shorter notice