The phrase "a connection when" is correct and usable in written English.
It can be used to describe a specific instance or condition under which a connection occurs or is made.
Example: "There is a connection when both parties share similar interests and values."
Alternatives: "a link when" or "a relationship when".
You and Sarah Palin seem to have developed quite a connection when she endorsed your race for governor.
With social networking, it's easy to fool yourself into thinking you've established a connection when you haven't.
And though she arrived here permanently only nine years ago, to serve as something of a caretaker, Sister Kathryn Vercelline always felt a connection when she passed through between one mission and the next.
First, both men and women are less likely to report a connection when a woman uses uncertain words like "kinda," "sorta," and "maybe". Second, both men and women were more likely to report a connection if the woman talked about herself.
The system displays turn-by-turn directions and will show the face of a connection when a call comes in.
It's great when there is a peak to it, but not if it goes further and you make a connection when there isn't one.
Youssef Rakha, a talented young novelist, told me that there's a special connection when a literate person can read ancient texts in a language that's so close to contemporary writing.
These include tighter limits on carry-on bags, not allowing a consumer to take an earlier connection when a seat is available and raising fees to change tickets.
There is also no sense in paying for a WiFi connection when a free one is nearby.
The SIP-based MIP6-MANET system supports the IP mobility mechanism which maintains a session connection when a mobile host roams from one MANET subnet to another.
Android 4.0 and later will default to an MTP connection when it connected to the computer.
