Same remarks after the response of 2♥ and developments.
Now when you play the openings of two major FANTUNES, inferences in these sequences allow you to better treat the problems. Indeed, the only weak hands (11-13 - HCP) can only be 5-3-3-2 (possibly 5-4m-2-2).
You can also have a weak hand with 4+hearts but you'll easily bid that hand.
It is then much more subtle to make the 2♠ rebid positive (14 + HCP)
while 2NT rebid and 3♦ are minimum (11 - 13 - HCP 5-3-2-2 or 5-4m-2-2 ). Other rebids at 3-level are structured hands 14 +HCP, two-suiter of at least 10 cards, or
single-suiter close to a strong 2.
The bid of 2 ♠ is a GAZZILLI . And consequently, the 2NT rebid by responder is then game forcing.
This shows that the flat weak hands are processed immediately and responder with a big hand even has all elements to judge the situation and conclude without revealing.
While with
stronger hands we develop immediately structured hands and with lesser shape we bid 2♠ to prospect the best contract of game or
slam.
Bearing in mind, the fastest you go the weakest you are, the slowest you go the strongest you are.