There is a one-on-one together.
And there is a group together.
Both work, but for different reasons.
The one-on-one approach, which addresses specific challenges, issues, and learning points, is more effective because of the intimate relationship that's not scalable.
A group is rarely about intimacy. Being together helps people build relationships with one another and fosters a sense of overall safety and belonging. When people find ways to help each other, everyone benefits.
Learning the differences helps us see the need for building both.