So for tiles like the Gherkin or the Globe, the way the text is written, you can have connectors sticking off the ends connecting to nothing, and score points,That is correct.
but the example image shows that they're actually connected to other tiles. Must they be connected to other tiles to be valid? No.
i assume so, but the text indicates otherwise...The text is correct. My diagram could have been clearer/better. Thanks for highlighting this.
I hope you enjoy the game. Best wishes, Richard B.