Atharv is married to Chetna, who is the only sister of Dilip. Chetna's paternal grandfather is Mukul. Neha is married to Mukul and they have two sons, Hardik and Bhavesh. Hardik is unmarried. Anjali is the daughter-in-law of Neha. Gyan is the son of Dilip and Ekta. How is Chetna related to Gyan?