As far as I’m aware, the experiments covered symptomatic cases but didn’t look at a reduction in “getting it”.

Based on this study, vaccinated had a 25% chance vs 38% for unvaccinated to become infected if someone in their household had Covid. So a helpful reduction, but not night and day.

Once infected, from what I’ve read vaccinated folks are just as likely to spread it.

https://www.bmj.com/content/375/bmj.n2638