Note.

Also, once you build that connection, you need to learn to maintain it as well.

Few things you can do to maintain it are,

Showing genuine interest in the other person while speaking and ask relavant questions.
Compliment them when you notice something you like about them.
Being appreciative about their presence and express that appreciation often by saying things like, I’m so happy you called, thank you for always listening to me and being there for me, I’m glad we are friends etc.
If you are open minded and comfortable, saying I love you in a platonic sense.
When you are talking to each other be present in the conversation and when they mention something they like or do remember it. And if you come across a similar meme or reel, send it to them.
When you come across something that reminds you of them in day to day life, take a picture and send it to them or even drop a text saying I saw this and remembered you.
Staying updated on each others lives is important too. Maybe not everyday but once in a while.

These are a few ways to maintain a connection.