Hi Tobias,
I belief the Buddha has seen it is not a being which experiences pancakhandha. The idea that a being experiences is, i belief, the basic deluded sanna deeply rooted in the mind. It is mind which experiences. But also that is only a given name.
Mind can also experience the total ending of all craving and asava’s and experience ultimate peace. I think mind can experience the conditioned (five khandha’s) but also the unconditioned element.
kind regards,
Siebe