You could always put in a basic powershell wait command, Example of a randomised wait period between 30 to 60 seconds below but you could be very specific on how long you wait. Just turn the bundle into a three package bundle instead.
Powershell $a=get-random –minimum 30 –maximum 60; start-sleep –s $a
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Yep basic powershell / batch that just "sleeps for a while" is a perfectly viable way of ensuring these wait times.
Simple is best / most reliable .