They probably aren't shoving off onto Branch 5 in Attleboro very often because the conductor is always in a rush to get home. They can shove out of the Chocolate and take the cars north to Walpole with them and this will save them an hour & a half or more. By doing this they tie onto emptiesd in Walpole from B736 the night before and then B732 out of Readville takes them with them after switching out Foxboro Terminal and passes them of to B731. B731 takes all of the Selkirks from Readville to Walpole on the MBCR's Franklin Branch and then up the Framingham Secondary to Framingham. They then head west on Q437 in the morning, same as if the cars came up from Attleboro on B725.