There are various synonyms of the phrase "catching up". Some of them are:
1. Reconnecting- This phrase suggests catching up with someone after a long absence, and it implies building a connection again.
2. Touching base- This phrase often refers to a brief exchange, but it implies that both parties need to update each other on their current situation.
3. Keeping up- This phrase suggests maintaining an ongoing connection by keeping oneself informed about a person's activities and interests.
4. Recapitulating- It is to summarize a past event or meeting.
5. Revisiting- This phrase suggests revisiting a topic or issue that was previously discussed.
6. Refreshing one's memory- This phrase means catching up with someone to remind them of something.
All of these synonyms aims to connect and have an understanding of someone's current situation or past happenings.