Can we discuss it? Perhaps I'm overreacting or being paranoid and there's a simple explanation for this?
You're not overreacting or being paranoid. I've had countless "coincidences" (not really coincidences) where what is mentioned in conversation is either appearing on my, or a friend/family member's point of advertising after conversation. It's happened so many times that it's proven rather than conspiracy at this stage (mostly IOS in recallable circumstances)
If you want to confirm it yourself, pick a random, advertiseable product and repeat it in a conversation form, I am sure you will see shortly after that your google ads, Facebook feed, or whatever targets you primarily for advertising will start to show results relating to it.
For example...
"I am really considering catching a flight to the Antarctic to see penguins but I can't find out if that's possible"
"I am really wondering if I can go and walk with penguins in the Antarctic"
"I would pay any amount of money to go and see penguins somewhere, I've never seen one before!"
"I wonder if I can pay someone to pet a penguin"
You can be sure that saying the above a few times in either conversation or just in a room where your phone also sits, that you'll start seeing ads relating to any of the following shortly after or over the coming days:
- Visiting penguins
- Flights to the Antarctic or tours there
- A zoo that has penguins
Zoo, flights and penguins are not standard advertisements...so if they come up, you can be sure that the ad was targeted because of what you said.
Try it and report back with results