新概念英语中.有一句 In the struggle,the strap broke and,怎么and连词没接啥?

新概念英语中.有一句 In the struggle,the strap broke and,怎么and连词没接啥?
原文 .In the struggle,the strap broke and,with the bag in their possession,both men started running through the trees.Mrs.Sterling got so angry that she ran after them.
and不是连词吗?怎么没接从句?就以个逗号
不太明白。