Still, we certainly don't know that an 11-hour nightly gap in the feeding schedule isn't doing harm.
There is no proof that having a gap of 11 hours between feedings won't cause any harm.
mnli hypothesis: There is no proof that having a gap of 11 hours between feedings won't cause any harm. premise: Still, we certainly don't know that an 11-hour nightly gap in the feeding schedule isn't doing harm.