And for those of us who don't take warning... we wade on it.
Much to our regret.
I really can't believe you have read anything substantial about screenwriting - 'least not retained it.
In the first 10 pages, we spend about 2.5 pages on a train... having a coffee, slowly stopping and... getting our cases and... getting off.
Matt's sons sleep during most of the train journey. Most readers will be joining them.