Concurrent timers in a rule, problem with interaction

I am trying to run two timers in a rule but I am not getting the results I was looking for. The timers seem to interact with each other.

OH 1.8

Q1) Is it possible to use multiple concurrent timers in a rule?

I have a few multiple-timer rules running on a Pi2 at 1.8.x. Would suggest looking for:

  1. places you need to cancel a timer and you are not doing so, potentially leading to multiple instances
  2. plain old “oops” in your naming/arguments

Thanks, I found that I had too short of times. When a device went off-line the timing would appear to be interacting due to slowness of updates.