Just to note that I'm well aware as to the difference between the perfect and perfective aspects.
Up until recently I though that the Perfect aspect can denote (in addition to its perfect aspect meaning) also either a perfective or an imperfective aspect meaning (depending on the context).
However, lately I've stumbled upon these claims:
source: It's said that the Perfect tenses in Spanish denote a perfective meaning, while the Conditional and Future denote imperfective meaning.
source: It's said that the Present Perfect in Spanish denotes a perfective meaning.
Does the non-progressive Present Perfect (Perfecto), Past Perfect (Pluscuamperfecto), Preterite Anterior (Pretérito Anterior) in Spanish necessarily denote perfective meaning or can they also denote imperfective meaning?
Does the non-progressive Perfect in English necessarily denotes perfective meaning or can it also denote imperfective meaning?
Does the Future (in English and Spanish) and Conditional (in Spanish) necessarily denote imperfective meaning or can they also denote perfective meaning?
What about Future Perfect and Conditional Perfect which are a combination of 1,2 and 3 above?