It was quite strange, the two people were standing at the end of the aisle, both holding the same style of notebook, clearly watching a middle aged man having a conversation with someone further down the aisle. They weren't taking notes but were clearly watching the guy, they weren't hiding but were staying close to the corner of the aisle to not be obviously in view. It's been bugging me since I saw it as I can't work out what they would be doing? The two 'observers' looked a tad anxious. If anyone knows what this could have been, would be great to know! The notepad holders gave off social care worker type vibes