Date: 202009
Local time of day: 1201-1800
Location: ZZZ.Airport, US
Aircraft: Commercial Fixed Wing
Operator: Air Carrier
Operating under: Part 121
Flight plan: IFR
Mission: Passenger
Flight phase: Taxi
Reporter organization: Air Carrier
Reporter function: First Officer
Reporter qualification: Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument
Human factors: Situational Awareness; Communication Breakdown
Second reporter function: Captain
Anomaly: Deviation / Discrepancy - Procedural Weight And Balance; Deviation / Discrepancy - Procedural Published Material / Policy
Detector: Person Flight Crew
When detected: In-flight
Result: General None Reported / Taken
Contributing factors: Environment - Non Weather Related; Human Factors
Primary problem: Human Factors

Narrative: After receiving our initial close out numbers we loaded them and then added Taxiway W departure on XXR. We got those performance numbers and loaded the new perf init. The perf init was slow to load.We taxied out and at some point the perf init loaded again. I think we had ramp frequency on radio 2 so we didn't have company freq tuned in.The taxi was quite quick and as we approached the runway we received some new close out numbers. I acknowledged them but as we ran the before takeoff check; we didn't receive any perf init data. We looked at the close out numbers and there didn't seem to be any changes apart from the ZCG of 23.1 which was a .1 change. The perf init was acting like there was a backlog which happens sometimes to make it slow and we didn't get new data.We were somewhat quickly cleared for takeoff and we became focused on operating the aircraft and taking off. Sometime after takeoff; we noticed the perf init message on the FMC finally appeared. Above 10;000 feet we cleared the message. Dispatch contacted us via ACARS and told us that CLP had included one heavy bag and wanted to see if we had received the new close out.[Recommend] to monitor company frequency on taxi; if possible. I usually do; but for some reason I had ramp on comm2 this time. This way we could have had the extra bag info sooner than the late revised CLP closeout on taxi; which is a distraction while taxiing at an airport like ZZZ. To always ensure the perf init data is loaded after a new closeout regardless of small or no changes...again; I know this; but the events (the slow perf init convinced us there was no perf init data coming).Not to be rushed under the new COVID conditions on taxi out. With so little traffic; all of our usual taxi times are much shorter and quicker.


Second narrative: After receiving our load closeout; we closed up and pushed from the gate in ZZZ.  As we approached Runway XX we were cleared for takeoff from intersection W. As we made the turn onto the runway; the FO accepted control; set takeoff power and accelerated. Rolling; we received another set of performance numbers. We continued the takeoff and climb. Above 10;000 feet; we looked at the new numbers and didn't see any change. Dispatch then sent us an ACARS passing along the change from CLP for the minor revision to the CG because of 1 heavy bag. I acknowledged the ACARS and continued. Enroute; a company aircraft that departed ZZZ after us reached us on air-to-air frequency and told us that ZZZ operations was attempting to contact us while we were taking off. We said thanks and left it. The correction from CLP was a change in ZCG from 23.0 to 23.1.I am assuming this was just a last minute change by the ramp crew or CLP and was not directly the negligence of any one person. With no traffic on the airport; the taxi and takeoff was extremely quick and we had changed frequencies before anyone noticed the changes.


Synopsis: Air carrier flight crew reported not communicating with operations and did not receive the new load out until airborne.