Don't trust what you read on Seeking Alpha. Pretty much anyone can write for them. I was considering it myself. Focus on and verify any facts presented, and ignore all opinions. That is the only way to read SA.
First of all, it is not a tender. That matters w.r.t. to your question. Second of all, the merger has not closed. That could take a few days, to a few weeks, or it may not close at all. Some of the comments in this thread are written as if the poster thinks the merger has closed.
I've done over 700 mergers. I'm an "arb", as they call us. To answer what I think the question is, the longest I've ever had to wait for cash from time of close is 6 days. 90% of the time, the cash has been received within 2 days of close. The other 10% of the time, 3-6 days. But, that is after close, not after vote.
If you are worried about liquidity, you are free to sell the shares while the market is open, before delisting. Good luck.