I remember we speculated about this, as it was stated by Chasing Halos, that Jonah and Adam were not 'close'.
Some thought it may have been Dina, some Rebecca and others Jonah.
I have a few questions? When did Howard arrive, what was the reason for his visit and where did he stay the night before Rebecca died. Also, it has been stated he rented a car and had it at the hospital for he and Jonah to use. Where did the car end up and why did they have (meaning Adam, Jonah and Rebecca) to drive him to the airport if he had a car available? One more. If they had left the hospital long enough to drive someone to the airport, why did they have dinner at McDonalds, in the hospital? And if they did do that, why did Adam text Rebeca before they went home?