To keep things in perspective, Biogunk, as you call it, is one of the most successful biotech companies in the world, with a market cap of $41 billion, 4Q20 revenues of $2.85 billion, 4Q net income of $3.58 billion, and a share price of $262. Biogunk has 10 approved and marketed drugs and 3 more in partnership with Genentech. As well, they have 17 investigational drugs in clinical trials.
As we know, Biogunk took a look at A2-73 and that was that. Clearly, Biogunk has no interest in Anavex whatsoever, so you need not worry about any potential takeover.