को: Theme ~> Recipient
After thinking about the "It took me time/Time passed to me" type sentences, those are [ss Theme--Recipient]. [ss Theme] because the predicate indicates the passage of time (which has the precedent of [ss Theme] in the English guidelines, e.g. [p en/my Theme--Gestalt] life) and [ss Recipient] because it is a dative subject.
* [gex 001 "{मुझ[pspecial "को" hi/ko Theme--Recipient] I-DAT} {बहुत much} {वक़्त time} {लगा feel-PRF}।" "I took a lot of time."]