What a numpty, clearly the easiest way to do that job was rest boiler on window sill flu through top fan opening window then all pipes go neatly underneath the window.
Some people don't know how to look at a job and see the best way to do it.
Your work is improving la, at least you didn't stick the condense pipe into the gutter.
But I must say; taking all that care to ensure the blow-off misses the window & then taking the C/Heating flow pipe outside like that, now that's shoddy. However, I'm sure the heat will stop the window frosting up in the Winter.
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