I will use New Years Eve as an example. Typically, I have two Uniden 436HP radios going; however, one of them died the other day from blunt force trauma.
If I had my two scanners, I would be using two over-the-ear earphones, one per ear. Since I have my radios programmed with Start Up Keys and Favorites set to toggle on/off, it depends on what is happening. Since I am married, I try to keep my radios silent for "Precious." However, this is one of my favorite scanning nights of the year. In Texas, folks like to drive drunk a lot. Hence, it is rather entertaining. "Precious" is nice enough to go into the other room after being fed raw meat with a pole.
In addition to the two scanners, I will have three browsers going in different time zones for live action. Of course, this year is rather unique since Time's Square will not be the same due to COVID-19.
Trust me, if I had the money, I would have at least four or six scanners going. If I lived in a larger city, I would have twelve, LOL.
But, I am happy with the two I own.