Pip phone assessment

Ive just had my pip phone assessment and it lasted 90 mins and I think it went ok , I got across how my disability’s effect me and said all the right things , but during the last half hour of the call we both had issues with connection and I missed things she said and she missed things I said but things were repeated and it all seemed fine and the assessment finished but then ten mins later she rang back !! And I obviously wasn’t prepared this time and she started asking different questions and querying dates and treatments that were misunderstood when our lines kept dropping out , so in the end she seemed quite happy and hopefully won’t ring again but where I was being confident of being awarded pip I’m now having doubts because of the dates and treatments confusion , is it normal for them to ring back