Logic Apps and long running Azure Function (Powershell)

Question

I have a Function App written in Powershell, that is being triggered by Logic Apps and that sends back to Logic Apps following response:

 Push-OutputBinding -Name Response -Value ([HttpResponseContext]@{
        StatusCode = [HttpStatusCode]::OK
        Body = [ordered]@{
        "Subject" = "$scriptName executed successfully."
        "MailTemplate" = "$template"
    } | ConvertTo-Json
    })

The problem is that this Function App can sometimes even run up to 10 minutes, and in that case it returns an error. I saw that a Webhook activity can be implemented in order to resolve the issue, but in that case the Function App would have to return a response twice - once at the very beginning with a status code 200, and once at the very end - which is not possible using the above method, since you can have only one OutputBinding in the code. How can this be resolved? I also tried adding an "until" loop into my Logic App, but this still gives me the same error.