Grammar fix

strong connection

close link

a powerful or deep relationship or bond between people, things, or ideas.

collocationB1common

Hear it in context

Notice where the phrase sounds natural.

She has a strong connection with her grandmother and talks to her every day.relationships
In my opinion, having a strong connection with your colleagues can make the workplace much more enjoyable and productive.IELTS speaking

Pattern: strong connection (with/between/to) [noun]

WrongI feel a strong connection between her.

RightI feel a strong connection with her.

A connection WITH a person (or BETWEEN two things).

Patternstrong connection (with/between/to) [noun]

Choose the version that sounds natural in speech.

Stiff There exists a profound interpersonal bond between them.

Natural They've got a strong connection.

Natural; the formal version reads like a psychology textbook.

Words that usually travel with it.

'Strong connection' is about emotional or logical links, not physical strength or internet signal.