Just want a quick check, does a player playing a Reaction card entitled immediately for his next Action window?

Not sure I fully understand your question. Reactions and Interrupts do not count towards a player's regular opportunity to take or pass an action during an action window, if that answers your question?

53 minutes ago, Zesu Shadaban said:

Not sure I fully understand your question. Reactions and Interrupts do not count towards a player's regular opportunity to take or pass an action during an action window, if that answers your question?

Yep thanks correct, just making sure we were doing the correct alternate plays.