1.请问红色字体的那句话是什么意思？我的理解是“那应该在几分中后发生”，可是语法上又说不通，向大家请教。

2.蓝色句子中on是什么意思？是不是要积累工作经验的意思？

“Just a few questions for you, Mr Dunne. Or Kenny. Can I call you Kenny? I feel we’ve become friends these past few seconds. Can I call you Kenny?”
“Sure,” Kenny said, slightly baffled.
“Thank you. Thank you very much. It’s important you feel comfortable around me, Kenny. It’s important we build up a level of trust. That way I’ll catch you completely unprepared when I suddenly accuse you of murder.”
Kenny’s eyebrows shot up. “What?”
“Oh dear,” said Inspector Me. “That wasn’t supposed to happen for another few minutes.”
“I didn’t kill Paul Lynch!”
“Could we go back to the nice feeling of trust we were building up?”
“Listen, I had arranged to meet him, I was going to interview him, but when I got there he was already dead.”

Kenny stared at the man, then looked over at the girl. “Who are you?”
She returned his look, raised an eyebrow, but didn’t answer.
“She’s here on work experience,” said Inspector Me. “Don’t you worry about her, Kenny. You just worry about yourself. What was your relationship with the corpse?”