Is the lack of communication for three days between friends – without animosity – considered abandonment that would lead one to Hell, based on the Hadith: "Whoever abandons for more than three days and dies, enters Hell"?

What was mentioned is not considered forbidden abandonment (hajr). Forbidden abandonment is when a Muslim stops speaking to his brother, even when they meet, and each turns away from the other, abandoning the greeting of peace (salam).