To carry on walking to another carriage

[Liteharted]

I got the train into work today as I do a few times a week. It's a 45 minute train journey and I often use the time to catch up on work and prep for the day or I just enjoy some quiet time. This morning I was walking and passed by someone I know well on the platform. I carried on walking to the front of the train. We said hi to one another but my social battery is easily drained and I just don't feel like making small talk for 45 mins. Would you think this is rude?

I'd find it odd if you just walked past with no actual acknowledgement. You said that you said "hi", but that could mean anything from "eye contact, smile and Hi" while still heading to your own seat to pretty much ignoring them, as you walked past with your head down. But certainly not rude for not sitting with them.

On work trips I've been known to deliberately book a later train back than a colleague, just so I can have a couple of hours to myself

I've done this too!

Absolutely not.

No i would be relieved.

I never sit with anyone on the way in to work. I used to have a direct colleague who lives near me and gets the same train, I told them to expect I’d say hi and walk on by. We’d get the train home together tho which was always nice.

one of my worst train journeys was on the way home from a (very draining) conference and a colleague plonked themselves down next to me and talked non stop. I was ruined by the time I got home.

Not rude at all! A dear friend and I both worked for the same company years ago and got the same train - I got on first and she got on a few stops later. Occasionally she’d get on and sit with me if she saw me but by and large we wouldn’t see each other until we got into London and then we’d walk to work together. She admitted that she liked the train journey on her own to read and I was the same. No problem whatsoever.

Not at all. You both said hi so you’ve ticked the polite box. Don’t even give it a second thought!