Baleen whales can't eat people. their teeth are baleen plated to filter SMALL pieces of food out of the water. People are much too large.
That's probably the exact thing they were thinking when it happened.
Eating something is not a matter of chewing it or digesting it. Simply swallowing it would count as having eaten something so whether or not the teeth of the whales are actually made to filter fish and plankton doesn't really mean anything in regards to whether or not they could have eaten the divers.. In any case, had the diver ended up in the mouth of that whale it might not have been the best of all experiences..
Their throats are about the size of a cantaloupe, so no, they wouldn't have been 'eaten'.
just in the wrong place at feeding time, hah~
So they would just be trapped in the mouth of a whale and dragged underwater. Much better.