Notes on the current edition
Ab Urbe Condita With An English Translation, books 1-10, 21-45, with periochae 11-20
3.
If we could follow Livy here we should place the final battle within an incredibly short time after Hannibal's landing. That this was the case no one can believe after comparing the passage Livy must have had before him, or tried to recall, as he wrote our sentence. For Polybius'
after a few days
(v. 3) makes no connection with the landing, but merely with the receipt of an urgent message from Carthage. That may have come to him many months —even a year —after disembarkation. Hannibal would be the last to shorten the long preparation indispensable to the making of an army out of his heterogeneous forces.