Joint Parliamentary Sessions in India are chaired by the

In the Indian parliamentary system, a joint sitting of both Houses is summoned by the President under Article 108 to resolve legislative deadlocks [6]. According to the Constitution and established parliamentary rules, the Speaker of the Lok Sabha presides over these joint sittings [5]. If the Speaker is absent, the Deputy Speaker of the Lok Sabha takes the chair [2]. Should the Deputy Speaker also be unavailable, the Deputy Chairman of the Rajya Sabha presides [3]. Crucially, the Vice-President of India, who serves as the ex-officio Chairman of the Rajya Sabha, does not preside over joint sessions [1]. The proceedings are governed by the Rules of Procedure of the Lok Sabha rather than the Rajya Sabha [2]. This ensures that the presiding officer is a member directly elected to the lower house or a representative of the legislative process within the Houses.

Sources

1. [1] https://en.wikipedia.org/wiki/Joint_session_of_the_Parliament_of_India
2. [6] Laxmikanth, M. Indian Polity. 7th ed., McGraw Hill. > Chapter 23: Parliament > JOINT SITTING OF TWO HOUSES > p. 250
3. [3] Indian Polity, M. Laxmikanth(7th ed.) > Chapter 23: Parliament > Unequal Status with Lok Sabha > p. 260
4. [5] Indian Polity, M. Laxmikanth(7th ed.) > Chapter 23: Parliament > JOINT SITTING OF TWO HOUSES > p. 250
5. [2] Laxmikanth, M. Indian Polity. 7th ed., McGraw Hill. > Chapter 23: Parliament > Unequal Status with Lok Sabha > p. 260