The short answer is yes, it's possible. It may also be possible with IFTTT only depending on what the devices are, what triggers them, and whether they can provide feedback on their status.
For example, if you want to turn on a smart bulb at 6pm every day, then turn on another smart bulb at 6:01, you can easily do that with two separate IFTTT applets using the Date & Time service. But if you need confirmation that the first action succeeded that would depend on whether the first bulb could report its current state. Can you give any more details on the available IFTTT triggers/actions for the devices?