After a successful siege of Schwaz and its stable occupation, Berengar waited a few days for rest and resupply. Now that he had effectively eliminated the enemy forces between Kufstein and Innsbruck, he could establish a stable logistical network to supply his war efforts which would go a long way towards establishing dominance in Tyrol.
No matter how powerful his army was, if they were cut off from supplies, it would only mean their demise; as such, Berengar and his army waited in Schwarz for a few days to fully resupply their forces and the garrison before moving out.
During this time, Berengar properly oversaw his forces and ensured they conducted themselves in a civilized manner. Prisoners of war were afforded proper treatment, and the civilians were left to go about their daily lives without harassment.
