Add check for ownership

CleanSlate/common/cb_types/other_cbs.txt

@@ -320,52 +320,61 @@ great_realm_conflict = {
 		# The attacker needs at least one county in the target kingdom, a border or be at the most two sea zones away
 		any_direct_de_jure_vassal_title = { # duchies
 			any_direct_de_jure_vassal_title = { # counties
-				OR = {
-					holder_scope = {
-						OR = {
-							character = ROOT
-							is_vassal_or_below_of = ROOT
+				trigger_if = {
+					limit = {
+						holder_scope = {
+							NOR = { # part of attacker's realm
+								character = ROOT
+								is_vassal_or_below_of = ROOT
+							}
 						}
 					}
+				}
+
+				holder_scope = {
+					OR = { # Actually part of Defender's realm, not a random title in the same de jure duchy
+						character = FROM
+						is_vassal_or_below_of = FROM
+					}
+				}
 
-					location = {
-						any_neighbor_province = {
-							trigger_if = {
-								limit = { has_owner = yes } # border county
+				location = {
+					any_neighbor_province = { # bordering province
+						trigger_if = {
+							limit = { has_owner = yes }
 
-								owner = {
-									OR = {
-										character = ROOT
-										is_vassal_or_below_of = ROOT
-									}
+							owner = { # part of attacker's realm
+								OR = {
+									character = ROOT
+									is_vassal_or_below_of = ROOT
 								}
 							}
-							trigger_else = {
-								is_land = no # first sea zone
+						}
+						trigger_else = {
+							is_land = no # first sea zone
 
-								any_neighbor_province = {
-									trigger_if = {
-										limit = { has_owner = yes }
+							any_neighbor_province = {
+								trigger_if = {
+									limit = { has_owner = yes }
+
+									owner = { # part of attacker's realm
+										OR = {
+											character = ROOT
+											is_vassal_or_below_of = ROOT
+										}
+									}
+								}
+								trigger_else = {
+									is_land = no # second sea zone
 
-										owner = {
+									any_neighbor_province = {
+										owner = { # part of attacker's realm
 											OR = {
 												character = ROOT
 												is_vassal_or_below_of = ROOT
 											}
 										}
 									}
-									trigger_else = {
-										is_land = no # second sea zone
-
-										any_neighbor_province = {
-											owner = {
-												OR = {
-													character = ROOT
-													is_vassal_or_below_of = ROOT
-												}
-											}
-										}
-									}
 								}
 							}
 						}