Looking at the ipad logs, this does look suspicious (see text in bold):
Date/Time: 2022-08-21 08:57:49.762 -0600
End time: 2022-08-21 09:02:25.724 -0600
OS Version: iPhone OS 15.6.1 (Build 19G82)
Architecture: arm64e
Report Version: 35.1
Incident Identifier: 69EE6824-8C85-46ED-B9BF-2A55AD464A6C
Share With Devs: Yes
Data Source: Microstackshots
Shared Cache: FA21C079-94F7-35A0-B38A-8B4CEF88650F slid base address 0x180538000, slide 0x538000
Command: backboardd
Path: /usr/libexec/backboardd
Architecture: arm64e
Parent: launchd [1]
PID: 66
Event: wakeups
Action taken: none
Wakeups: 45001 wakeups over the last 276 seconds (163 wakeups per second average), exceeding limit of 150 wakeups per second over 300 seconds
Wakeups limit: 45000
Limit duration: 300s
Wakeups caused: 45001
Wakeups duration: 276s
Duration: 275.96s
Duration Sampled: 274.89s
Steps: 318
Hardware model: iPad14,1
Active cpus: 6
HW page size: 16384
VM page size: 16384
Advisory levels: Battery -> 2, User -> 3, ThermalPressure -> 0, Combined -> 2
Free disk space: 110.13 GB/238.40 GB, low space threshold 150 MB