Talks between Airbnb and Hotel Tonight, described by one of the people as informal, have gone cold though they could come back to life.

Whether or not there is a deal, Airbnb’s flirtation with Hotel Tonight highlights the need some executives and investors see for the startup to branch into new lines of business that can bolster its core home rentals, particularly as it faces heightened competition from other online-travel aggregators like Expedia Group.

Airbnb is separately considering building its own competitor to Hotel Tonight and is also eyeing joint ventures with boutique hotel chains