Bengali Language/Expressing Opposition

Expression of opposition for expressing simple contrast
This is done by using the equivalent of English "but" in Bengali, which is কিন্তু (kintu)

ছেলেটা বোকা কিন্তু তার ভাইটা চালাক।

ChheleTaa boka kintu tar bhaita chaalaak.

The boy is stupid but his brother is clever.

Expression of opposition when something logically unexpected follows
In Bengali, this can be expressed in the following way:

Structure 1 - jodio (যদিও) ... taa shawtteo (তা সত্ত্বেও) / taar pawreo (তার পরেও) ...
jodio (যদিও) + setup sentence + taa shawtteo (তা সত্ত্বেও) / taar pawreo (তার পরেও) + logically unexpected followup sentence