Is it possible to trade Pokémon on HeartGold without using WEP?

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Yes, there is already a similar question here, but it's not the same.
Situation:
- WEP connections are not a good idea.
- There's no-one around who owns another 3DS and a Pokemon game.
My question is: does this mean that there's no way for me to actually trade Pokémon?
I understand it only works with a Wifi connection secured with WEP - is that correct?
So if I don't have that, is there no other way?
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How do you trade pokémon on HeartGold without WIFI?
Go upstairs (not downstairs) and talk to the lady in the middle. She will bring you to a union room. There you can trade and battle. You can do this without a wifi connection.Can you still trade HeartGold?
(Internet trades are no longer possible for Pok\xe9mon Diamond, Pok\xe9mon Pearl, Pok\xe9mon Platinum, Pok\xe9mon HeartGold, or Pok\xe9mon SoulSilver.)Can Heart Gold trade with black?
Pok\xe9mon sent from Pok\xe9mon HeartGold to Pok\xe9mon Black cannot be sent back to Pok\xe9mon HeartGold! To transfer pok\xe9mon from Pok\xe9mon HeartGold to Pok\xe9mon Black, go to Route 15 in Pok\xe9mon Black and go into the Pok\xe9 Transfer Lab.Can Pokémon HeartGold trade with Pearl?
In-Game Requirements Before you can trade from Pok\xe9mon Pearl to Pok\xe9mon HeartGold, you have to meet the following requirements in the game: In Pok\xe9mon Pearl, you need to get the Pok\xe9dex from Professor Rowan in Sandgem Town, and you need to have at least two pok\xe9mon in your party.HOW EASILY CAN YOU TRANSFER POKEMON FROM EVERY GENERATION TO POKEMON HOME/SWORD/SHIELD/?
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