"[spoiler discussion]" arc 8 (volume 38) question about subaru's abilities

so i have two questions about cor leonis.

1 how big is the radius effect now? cause when subaru was in lupugana the pleiades battalion was still recibing the buff from cor leonis. does that mean that subaru mastery over cor leonis increased drastically? since in arc 6 when he get away from the tower ram get out of the radius effect.

2 why couldn't he find emilia in the final 1 minute loop? didn't cor leonis allowed him to feel the location of his allies?

if i did say something wrong please correct me