19…f5 should have been played.

Here material is also equal again, but Black’s pieces have lost their coordination. He still managed to draw though.

A swinging queen’s rook. Suddenly the rook is participating!

Now the f6-knight is protected by the rook. The strong pressure against e4 forces White to exchange his h4-bishop.

Black is perfectly fine, defending actively.

Actually, this is quite a common manoeuvre in the Colle to gain space. So the answer is yes, since…

… can safely be met with

Black typically countered in the centre, but after…

And then White managed to exploit his initiative on the kingside.