3♥ is explained as: 5+S; 11-21HCP; 12-22 total points; Forcing to 3N.
Doesn't it say anything about hearts?
4♥ is explained as: 4+H; 5+S; 11-21HCP; 12-22 total points.
Now he's showing hearts. Neither bid restricts strength beyond 12-22 total points?

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