Popatlal is asked by Sapna's father if he is interested in marrying his daughter. Poptalal has to decide. Before answering he consults Bapuji and asks if he should wait for Kalpana before deciding. Before he can answer, Kalpana and her family arrive. She talks to Popatlal and then her family get digs info on Popatlal as they have "already" researched him. Kalpana and Popatlal have a private word at the end.
source https://timesofindia.indiatimes.com/tv/news/hindi/taarak-mehta-ka-ooltah-chashmah-update-june-1-sapna-and-her-family-learn-about-kalpana/articleshow/100686120.cms
source https://timesofindia.indiatimes.com/tv/news/hindi/taarak-mehta-ka-ooltah-chashmah-update-june-1-sapna-and-her-family-learn-about-kalpana/articleshow/100686120.cms