Hey there!

I have a question regarding Breeding and the Training Boost. I am no native speaker, so I might be missing something. The Wiki tells me the following rule for the Training Boost: 

"Training boost is calculated by averaging a breeding pair’s level and diving by 10. (Stallion Leve + Mare Level / 10 = Foal Training Boost"

I thought that this means if - as an example - two level 40 horses are bred with each other, the TB of the foal will be 8 (40+40=80 -> 80/10=8). But somehow it doens't seem to work like this.

These two horses are level 38 and 52:

https://horsefable.com/horse/1328889

https://horsefable.com/horse/1326622

This is their foal: https://horsefable.com/horse/1382160

(38+52)/10 would be 9, but the foal has a TB of 3. Can someone explain me the reason for that? What am I missing? At this point I am beginning to feel confused :D Do they have to be at least level 50 or higher for the rule to work?

Thank you!