62.45Level 22 — planed dominant chord approach

Target:

C7.

Approach:

D♭7

→ C7.

But now ask:

Is that side-slip or functional harmony?

Possibly both.

D♭7 is a chromatic dominant a semitone above.

If treated very briefly:

approach chord.

If structurally prolonged:

actual harmony.

Again, duration matters.