Yes, there is no reason why you can't connect both boxes to you TV providing you have enough HDMI ports. You can buy extenders to create more if necessary.
You can then record on your old box and use the 4k one for apps such as ITVX that don't work on the old box.
Rather than throw it in the bin, if you really don't want it you can request a returns bag.
Please remember to mark Solved Posts with Best Answer. Doing so helps other customers and saves TalkTalk's Support Team time by only looking at unsolved topics. Thanks, Steve (a fellow customer).
