The two Mage Lords continued fighting for several minutes. If one of the two of them were noticeably weaker than the other, the fight wouldn't take this long.
Fights between Mages with unequal powers would be finished very quickly, but fights between Mages with comparable power could sometimes take hours.
Such a long fight was essentially not a race to kill the other person quickly but to gain a slight advantage over Mana. The two Mages would contest and battle each other for every 0.1% of Mana with all their power.
A fight between Mages either ended in just a couple of seconds or took hours.
There rarely were fights lasting a couple of minutes. That would only happen if one of the two sides made a horrible mistake.
Seeing that the fight had already gone on for several minutes, the people knew that it wouldn't end anytime soon.