With the ruling that HUD Goggles affects lightspeeed barrage making it unlimited (https://greaterthangames.com/comment/109102#comment-109102), will that change the opinion of using "Unrelenting Momemntum" and it not affecting "Lightspeed Barrage" (https://greaterthangames.com/comment/84963#comment-84963)?
If it does not, then we should read "Unrelenting Momentum" as "when Tachyon takes an action ability for the second time in a turn, she may take that action a third time for free"?