There are several possible interpretations because: (a) "conversar" can be translated as "to converse" or "to talk" (or some others); (b) the "-amos" version is both present and past tense; (c) the past tense can be the simple past or the present perfect. Putting all the variations together gives quite a list of literal translations and "We never converse" is simply one of them.
I agree. That said, we're probably all doing this to learn. They're Pittsburghers, I know they'll keep refining til they get it right. Until then, I have to admit that the extra forced attention increases stickiness. Learning's probably more a product of time and attention than anything else anyway. Don't be discouraged.
It's kinda obvious that later on there are more mistakes, as less people have reached those parts yet. Just remember to always report. People who come after you will thank you. I just encountered this sentence, and we never speak was accepted as correct. Thank you for reporting this before I could get frustrated about it.
Because the «nós» conjugation is the same in the past («pretérito perfeito») and the present tenses, there is no distinction, so it could be either.
Only in European Portuguese is there a distinction: the present tense conjugation is «conversamos», but the past tense conjugation is «conversámos». This distinction is only maintained in verbs ending in «-ar».