My thoughts -
On Davenport....reporting to camp out of shape would explain why he was still playing when they pulled the rest of the starters. The coaching staff were trying to play him into shape. It would also explain his lack of burst and his looking slower than last year.
On Brees....sorry but I have my doubts. If Brees were confiding in people (even people he trusts) he was retiring after this season it would get out. Someone prominent in the sportsmedia would put it out. It’s too big to keep it quiet. Something that big would be out tomorrow in ESPN’s crawl - “Brees to retire after 2019 season” verified or not. I’m sure Brees has a plan but I think it involves another Super Bowl appearance.