There is only a couple of ways that I can think of doing this without removed the other plugins fields from the page.
That would be building a custom JavaScript application that copies the values of the ACF fields to the other plugins fields as they are updated. As well as the reverse of this, altering the new ACF fields when the plugin fields are changed in case the user decided to edit them there.
The other way would be to figure out when the other plugin fires to update the values from the input, and create an action that fires after the plugin’s action and then overwrite all of the values with the value submitted in the ACF fields. Basically create your own custom save process for every field.
