I know it's simple to put a time stamp on the form once it's submitted, but it is possible to put a time stamp on the form when it's opened/ received by another party.
For example one employee gets the form and fills out their section. Once they hit submit it's time stamped, and when the next employee gets the form it's stamped when they receive it and stamped again when he/ she sends it out. This way we know how long they had the form for.
Thanks!