UPS has confirmed that the offer period for TNT Express shares will now run until 9 November.
It comes after TNT Express confirmed earlier this month that the European Commission had temporarily suspended the takeover to allow regulators more time to gather information.
Regardless, the companies still expect the deal to be sealed by the fourth quarter of this year.
The €5.16bn (£4.07bn) takeover will transform UPS into a €45bn company with global reach.