“Insofar as” means to the extent or degree that something affects another thing or is connected with it.
We are expecting a busy summer insofar as bookings are already up for August.
The committee´s recommendations, insofar as they affect deaf people, are set out in this document.
“Although” is used to express a contrasting idea.
Although she knew about his past, she couldn´t help loving him.
I carried on working, although I felt really tired.
Although I was extremely bored, I stayed until the end.
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