Why doesn’t do not disturb turn off in focus

Apple support's article:

Turn on or schedule a Focus on iPhone – Apple Support

says:

"Note: If another Focus is already on, it turns off when you tap the new one".

Also says:

Turn off a Focus

"When you’re finished using a Focus, you can quickly turn it off to allow notifications again.

After you turn off a Focus, it still appears in Control Center and can be reused.

Do any of the following:

• • • Touch and hold the Focus icon on the Lock Screen.
    • Open Control Center, then tap Focus.

Tap the Focus that’s on to turn it off".

Try Settings > Focus > Do Not Disturb > Then tap the amount of time that is set to turn it off.

"Why doesn’t do not disturb turn off in focus"

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Not sure. Where are your accessing this info?