Requesting clarification on Section 54f for property purchased in 2013 under 'subvention scheme'

This discussion seeks clarification on whether capital gains tax deduction under Section 54F can be claimed for a Mumbai apartment purchased in 2013 via an 80:20 subvention scheme. The original buyer paid 20% down, with the builder covering EMIs until 2019 when the builder went bankrupt. The buyer then started paying EMIs, and with possession expected in a year, they are now facing capital gains and have repaid the principal loan. The core question is about eligibility for Section 54F, especially considering the unique payment circumstances and the timing of capital gains realisation versus loan repayment.