To what extent is it permissible to combine Jumu'ah and Asr prayers, shortened, in the Sacred Mosque (Masjid al-Haram) in Mecca?

Scholars have differed regarding the validity of combining the Jumu'ah prayer with the 'Asr prayer, given that Jumu'ah is not established during travel, and the combining of the two noon prayers is often linked to travel. No one has distinguished between the Sacred Mosque (in Mecca) and other places concerning this issue.