Time_to_resolution_in_bhrs & time_to_resolution_in_chrs

time_to_resolution_in_bhrs & time_to_resolution_in_chrs are attributes of the serverless app onTicketUpdate event ticket data payload.

Are they fixed values based on the applicable SLA or do they indicate the remaining amount of time the ticket has to be resolved? ie. if the value is zero then the ticket has violated its SLA.

If they are fixed values how can we identify if the ticket has violated its SLA with regards to resolution without having to download the SLA, and then the business hours, and then do a lot of calculations.