SOU are required to PUSU by EOD 11th March6 Mar 2022 15:20
It will be interesting to see how that dynamic plays out. Their (SOU) Investor Q&A released on 24th February doesn't provide any updated information as they are, of course, bound by the rules of the Takeover and Mergers panel, however, it's clear they see (see answer to question 2) the potential purchase of Angus as a way of diversifying their business.
I think the overriding factor will be how much of the enlarged entity they are willing to give up to Angus shareholders as to whether they make an offer. With their SP slipping back considerably since the initial approaches, they would need to part with a higher % now, so it's a case of persuading their shareholders it's worth it - possibly citing the incredible increase in the gas price.