Confusing hint on けれども exercise

[tmmy_xo]

I typed in けど but the hint said it was expecting “a less formal” version of it. What it was expecting in fact was けれども which is the exact opposite of “less formal”.

[Lenners]

I understand that as it wants less formal than が while still being literary ＝けれども > けど

I think?

[tmmy_xo]

But I did not type in が, the hints in yellow are always responses to your actual input

[Lenners]

Sorry yes, I see what you mean. The hint suggests that けれども is less formal than けど

Brain fart