they saw him but gabby petito's body had not yet been discovered according to that timeline the last time they saw him. so is that essentially an admission that their son killed her? >> well, we have reached out to the attorney about that. he has not responded to our request for any sort of clarification but this morning on "good morning america," he was asked what exactly did the parents think that brian laundrie was grieving, given what you're saying. the calendar. the timeline. because their timeline indicates that brian laundrie was last seen monday september 13th. gabby petito's remains were found september 19th. that was the following sunday. so what exactly was he grieving? he didn't address the time discrepancy there but he did say that brian was very upset. so much so that his parents were concerned about him and they regret not having stopped him from leaving. he also provided some insight as to some of the possibilities that the family has discussed.