22.4Core major ii–V–I

In B♭:

Cm7 → F7 → B♭maj7

This should be completely automatic by now.

Guide tones:

Cm7: E♭-B♭

F7: E♭-A

B♭maj7: D-A.

Movement:

B♭ → A

then:

E♭ → D

Very smooth.