They were taking time in fact for their movements.

For the moment the ports of Epirus were guarded, over and above the fleet, merely by their own civic defences and the levies of the adjoining districts.
Caesar against Pompeius It thus remained possible for Caesar, notwithstanding the intervention of the Spanish war, to assume the offensive also in Macedonia; and he at least was not slow to act.

He had long ago ordered the collection of vessels of war and transports in Brundisium, and after the capitulation of the Spanish army and the fall of Massilia had directed the greater portion of the select troops employed there to proceed to that destination.

The unparalleled exertions no doubt, which were thus required by Caesar from his soldiers, thinned the ranks more than their conflicts had done and the mutiny of one of the four oldest legions, the ninth on its march through Placentia was a dangerous indication of the temper prevailing in the army; but Caesar's presence of mind and personal authority gained the mastery, and from this quarter nothing impeded the embarkation.

But the want of ships, through which the pursuit of Pompeius had failed in March 705, threatened also to frustrate this expedition.