Route53, A record with alias and ip at the same time?

I have a Route53 A record alias to my ELB for example.com (https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/routing-to-elb-load-balancer.html) and I’m trying to connect domain example.com to firebase hosting. (to use example.com as dynamic link domain) And firebase setup tool asks me to create two A record example.com for two ip addresses. Route 53 doesn’t seem to allow me to have…