yeah... no - bg series were about one certain person and his/her destiny. from start to the end. that got concluded in bg;tob

other great series with STORY connecting them is mass effect - your choices from ME1 made difference all the way until the end in ME3

sequel with same WORLD would be fallout 1 & 2 - but you still had STORY in it tying it together

for now i don't see how bg3 is connected to previous games, which i guess is what ppl expect for no. 3 in the title.