Did Pakistan withdraw its support once it was clear what the Taliban had in mind?
Did Pakistan support the Northern Alliance when they began an uprising or did it arm and train the Taliban even further?
Pakistan supported the Taliban for one reason and one reason alone, to control Afghanistan by proxy. Stop beating around the bush.
Has Pakistan really come around to the idea of a neutral Afghanistan?
What exactly do you mean by 'days of old', an Afghanistan that has no relations with India or one that has economic and military cooperation with one of the largest economies in the region?
You see it all depends on how Pakistan defines a 'stable' Afghanistan. With India now in the picture, Pakistan will inevitably keep its options open with the Afghan Taliban. Which is why we see reports like this...
BBC News - Pakistani agents 'funding and training Afghan Taliban'
Pakistan can rubbish these claims all it wants on paper, what its really doing is opening up doors for India. We aren't the one's pursuing a 'zero sum' strategy, Pakistan is, the results of which are abundantly clear.
In any case, there's no point discussing this further as we've already been over this on several occasions. I'd just like to see the end result of this war and its impact on Afghanistan and US-Pakistani relations. The way I see it, India will win either way, be it Iran, Afghanistan (or both) or the US.