Immediately following the capture of Consentia and Petelia, Carthaginian forces moved against the Greek cities of Bruttium, attacking first Rhegion then Locri. Polybius records that the siege of Petelia lasted eleven months, and this date is followed by Frontinus, while Livy mentions only an unspecified number of months. Walbank (1970: II.30–1) argues that the siege would have ended late in the summer of 215, perhaps in September, assuming (1) a couple of months passed from the battle at Cannae until the investment of Petelia, and (2) the Roman calendar was in line with the solar calendar.

This position is difficult to reconcile with Livy's claim that Carthaginian forces landed at Locri, which fell after Petelia, then marched to Hannibal in Campania and finally returned to Bruttium by the end of the campaign season. If Locri fell a few weeks after Petelia, then the reinforcements could not have arrived until late September or early October. Hanno would not have reached Hannibal with the reinforcements until mid- or late October, and he would not have returned to Bruttium until (probably) sometime in November. Even if the Roman calendar were running well ahead of the seasons, by a month or even six weeks (Derow 1976), then Hanno would have returned to Bruttium in October, still very late in the campaign season. It is unlikely, though not impossible, that the Carthaginians conducted operations so late in the year.