How to compare phone fields

I have two objects with Phone fields in them. Object A's phone field contains "1234567890" in it and Object B has "123-456-7890". I have a flow that compares the two phone fields in a Decision element and finds that they are not equal. 

Is there an easy way to compare two phone fields so that it only compares them numerically? I'm planning on creating a Standardized Phone Number field in each object and creating a flow that extracts the numeric part of the phone numbers and puts it into the Standardized Phone Number field, but am hoping there's a simpler way.

Thanks!

#Data Management