score:14
The Elizabeth Line serves both Heathrow and Forest Gate, but trains follow different service patterns, and currently all Heathrow trains go down the Abbey Wood branch, and not the Shenfield branch.
Fortunately itβs very easy to change:
From the 21st of May 2023 there will be some direct trains from Heathrow to Shenfield, but sometimes it will still be quicker to change.