Hi everybody,

I want to use geom_line to link the points on the picture got from conditional_effects() of brms package.

The daulft picture got from conditional_effects look like this:

```
p<-conditional_effects(model, "hour2:period")
p
```

If I use add the following codes, it will draw two lines but will not link the points correctly, see the following picture:

```
plot(p)[[1]] +
geom_line(aes(group = period))
```

Does anyone have any expriences to solve this issue? Many Thanks!