It is protocol to send the food first, before the passenger.
The appropriate food is placed on the platform. After five seconds it will disappear and it is very, very important to wait for confirmation from the other side that it has arrived and a report as to its condition. If the food does not appear at the other end, you must send more.
It is only safe to have the passenger step onto the platform when the destination platform receives more an item of food that is more than 75% untouched. It means that they are full.
The passenger must be transported once the recipient facility reports this condition has been met. The window of time thereafter is not very long, a lesson learned quickly, if punitively. The hunger will always return.
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