The young American continues in style, but the simpler 18…Rd6 was also sufficient.

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.