The Peach Paradox
During their time in the alternate future, a peach is thrown at Cavendish and then picked up by Dakota. Thanks to this, they are able to notice and hide from a nearby army of pistachio monsters. When they travel ten minutes in time, they see their past selves and use the peach to warn them about the army...and then have a confused argument, about where the peach came from before hand.
Stable Time Loop