Sorry if this has been answered elsewhere, but my search fu is failing me.

The sense power has two control upgrades that allow a committed die. One upgrades the difficulty of the first attack against you each round, the other upgrades a combat check made each round. Both of these are "ongoing effects." There is a duration upgrade that allows you to use it more often, and a strength upgrade that allows you to upgrade twice. Each apply to Sense's 'ongoing effects.'

Does the strength upgrade apply to both at the same time? Or only the first ongoing effect (the defensive one)? Or only one at a time?

If you have all upgrades and the needed FD, it means both twice. You'll notice the Duration and Strength both say "ongoing effects" as in plural.

Both the Strength and Duration upgrades of Sense apply to both Control upgrades.

However, you can only have one Control upgrade active per Force Die committed. So if you want both the defensive effect and the offensive effect active, then you've gotta commit two Force dice. And then once you do, they can both be triggered twice per round with a double-upgrade for each dice pool in question.

The hard part is getting a second attack per round

Both the Strength and Duration upgrades of Sense apply to both Control upgrades.

However, you can only have one Control upgrade active per Force Die committed. So if you want both the defensive effect and the offensive effect active, then you've gotta commit two Force dice. And then once you do, they can both be triggered twice per round with a double-upgrade for each dice pool in question.

The hard part is getting a second attack per round

Thank you.

And yeah, I recognized that the duration upgrade is less than applicable. But I'm looking forward to upgrading my attack twice each round. I'm gonna have to go buy more dice to roll in a single pool.

There are a few areas where you could use the Sense attack upgrade twice in a round:

Force Assault talent (only works if you miss your first attack)

The Force Is My Ally talent (1/session)

Unleash power's maneuver-Control upgrade (1/session)

So it's possible, but pretty situational. I'm not sure if there are any others

Its possible with improved reflect and parry and similar talents.

And with the fairly common Improved Field Commander talent.

There are plenty of ways to do it, you just gotta work at it !

Its possible with improved reflect and parry and similar talents.

Not really, as neither Improved Parry or Improved Reflect require the user to make an attack roll, just spend 3 Threat or a Despair from the attacker's combat check to trigger the desired effect.

So in that respect, Sense's offensive Control upgrade wouldn't be of any use.

If you get the right crit, you can repeat the attack with the exact same dice pool.