If one team is allowed a concussion substitute, the opponent is permitted an additional normal substitute too
Well, just reading the Premier League rules it’s the team that has to substitute a player for concussion that can have a total of 6 or 7 substitutions as you are allowed 2 concussion substitutes per team. Southampton having a concussion substitute today doesn’t mean we are allowed to have 6 instead of the normal 5, unless we make a concussion substitute as well.
A team is allowed 2 concussion substitutes which are referred to as 'normal' substitutions as opposed to 'additional' substitutions. It comes under Law 3.2. When a 'concussion substitute' is used, the opposing team then has the option to use an 'additional substitute' for any reason.
Ok, Must have been updated from the Pemier league page I was looking on, but just checked the date and it was from 2021….
it's a stat based on data which means for it to be xg of 1 would mean pens are never missed . honestly not sure why you can't grasp this
https://www.theifab.com/laws/latest/additional-permanent-concussion-substitutions-protocol/ Scroll down to Procedure and read the last point.