League volume

I’m a little confused by the volume on the Nash League page. On the main page it says that the current total volume is around 17M but right underneath that is the volume of the squads and if you total up just the first 4 teams their combined volume is over 20M. A significant difference. Do we know which figures are correct?

both are. a trade is made between 2 parties. it counts one time as volume but it count 2 times for the traders.

Ah of course, that makes sense