* "Telephonic" is rarely used. It's more common to say "phone" or "telephone" directly.
* The phrasing is wordy and unclear. It's better to use more concise and direct language.
Here are some better ways to express the same idea:
* During our phone conversation: This is the most natural and straightforward option.
* In our phone call: This is also a clear and concise way to express the idea.
* When we spoke on the phone: This emphasizes the action of speaking.
You can also use a more specific verb instead of "had," depending on the context. For example:
* In our phone discussion, we agreed to...
* During our phone conversation, you mentioned...
Ultimately, the best way to phrase it depends on the specific situation and the intended meaning.