In Oathbringer, Dalinar three years after the death of Evi goes to look for alcohol, and finds a person named Ahu, who references several of the unmade, and is later revealed to be a herald later in the book as Moash kills him. My question is: how, eight years before being involved in any type of surgebinding, does Dalinar meet a Herald? Could it be because of some meddling of a shard or something else, or was it just coincidence?