Upon issuing the order, Wang Zhong was actually quite anxious, fearing that just trying out this decision might cause his troops to be sacrificed in vain, suffering many casualties.
Uncle Hei's tactics sometimes really aren't for everyone, just as not everyone can use Indian tactics.
That's when the drawback of the "external assistance" became apparent, only during communication could one gain a field of view, but military communications couldn't be used for idle chatter. After quickly understanding the situation and giving orders, communication ended.
In other words, Wang Zhong's frontline field of view could not be sustained continuously, maintaining constant contact with the assaulting troops might disrupt the commander's judgment, leading to less than ideal outcomes.
Therefore, Wang Zhong could only ask Vasily to contact the assault battalion again under the pretense of having them report the situation, using their perspective to check on the condition of the assault troops.