In the spirit of sports psychology, I analysed the manner in which coordination between tongue and fingers might be best and most intuitively achieved. It is tied up with the knowedge of fingerings, in that each fingering must be capable of "printing" on the instrument as a discreet "formula". The best way to develop / practise this is to play all fingerings from the "no fingers" note (open F on bassoon) so recognition of a note produces the entire pattern "over-printed" so to speak, regardless of the previous note or notes. i.e. avoid playing a run by simply adding (or subtracting) another finger, or "swapping" fingers etc.
The coordination aspect is premised on the concept of time (beat and sub-divisions) being the highest element in the process.
If the player is "hooked into" a time environment, all actions proceed form there.
At the precise moment decided / dictated, a "time signal" is "fired", the tongue makes an action on the reed and the finger pattern is applied. Both actions are simultaneously carried out on the "fire" command.
Music involves a series of "nows". The principal task is to determine those "nows" and act upon them.
In contrast it is often the case that a player will try to practise repeated tonguing "machine -gun" fashion and then try to match the fingering actions (often by amending previous fingerings by adding, subtracting, etc). The corollary is to practise runs and try to match the tonguing. Both must be avoided.
I use analogies for my students which sometimes help.
Baking cookies! Instead of assembling cookies from the individual ingredients and (more bizarrely) trying to alter the ingredients to create different flavoured cookies, we nowadays go to the pantry and select the cookie we want - ready-made. There is always an endless supply of cookies in the pantry - and every one is delivered on request fully assembled.
As long as the sense of "moment" remains the priority, the rest should fall into place naturally (and sometimes surprisingly). The aim is to "think right" and leave the rest to well prepared systems to deliver without interference from conscious actions.
Hope this explains my reference.
Best wishes Neville
Christchurch New Zealand
Bassoonist / Teacher / Conductor