Rise of tvk and their alliance with Congress is a big win for bjp
Congress forming alliance with tvk and breaking away from dmk weakens INDIA bloc significantly moreover after tmc loss. This makes DMK neutral in many matters. BJP will be able to count on their votes in lok sabha and rajya sabha and get more done. TVK has no stake in parliament. So, they are non-existent there. If bjp delivers in bengal for next 3 years, could be a huge win in lok sabha for them. It will fill the gap due to any anti-incumbency in other states.
INC is dragging INDIA bloc, they are dragging the alliance. An opposition without INC alliance has more potential imo. INC has proven it can't move away from keeping control, even if they lose 2029, priyanka can pretty much take control over leadership.
Another option is split in INC. That could potentially revive the alliance. Without any of this BJP remains in high control even if it means they might have to form gov with NDA alliance, but much more control in states. Next year elections are again high stakes. Extremely interesting but next 2 parliament sessions will be interesting as well. How will dmk behave? Will they remain neutral, force INC to break alliance with tvk?