Firstly refer to Liber MMM since it is the most accessible to an English speaking audience and you will see that high-tier meditations have been alluded to.

These meditations were developed by the Buddha; he used them in a certain order before dying for unknown purposes but I can make an educated guess on why you would want to use every one in unison.

To be fair I strongly doubt the Buddha applied them in this way.

I first developed sight, the introductory version of the apex-sight meditation is called Trataka; at higher levels of Trataka you can visually experience the emptiness spoken about in some schools.

The emptiness is accompanied by a pulse that is distinct from the heart-beat but rhythmic; waves or beats of emptiness move through your vision to displace perceived reality.

But this is just perceived reality; this pulse is the common-denominator between all the sense meditations.

I acquired touch after I acquired sight; so I already knew that to omit my sensory experience of touch I must find and align with this pulse.

One way to experience is it to be completely still.

The only thing complete stillness doesn't work for is taste and smell, which I believe are forks of the same sense.

After you gain a feel for this pulse you can place your hand or whatever on a person and feel their own pulse.

Same as Transmigration; you must align this pulse with the entity in question and then begin to change the modulation of it.

It is like towing a car, you push and then stop to let the car fall back before pushing again to gain momentum.

On the final push; you must give it your absolute all and if you can do that, you'll outright kill whatever you're touching.