Those of us who are old enough to have been taught grammar and parsing will be familiar with the concept of indirect questions. Maybe if that could be added to the explanation it would be clearer than "at what moment in time". (For some of us "indirect question" will be more familiar than "indirect interrogative sentence" because of what we were taught at school.)
Also "A ver" is, I believe, one of those impossible-to-translate phrases and the translation "Let's see" might not immediately make native-English-speakers think of indirect questions. When I thought about it some more I thought that "I wonder when..." might be clearer
As somebody already pointed out, if you're not aiming to do much writing, this point is really a marginal concern and I admit that I'm tempted to ignore it.
