Get exlpain() and toArray() by one trip to mongodb?

Is it possible? As I understand it, I have to make two separate requests, one for data, the other for statistics. All my attempts to do this on a single cursor result in a “cursor is exhausted” message on the second operation.

But I really do not want to go to db twice.

I also do not understand the reason why statistics are not included in the returned data by default.