AR9462 Bluetooth unable to connect (timeout)

[ameyjoshi]

I am using mint 21 with Qualcomm Atheros AR9462 built in bluetooth. I can scan bluetooth device (BnW31) but cannot connect with it. Error shown is
Connection Failed: br-connection-page-timeout
I tried connecting with windows on same device and it worked flawlessly.
System:

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Audio:
  Device-1: Intel Xeon E3-1200 v3/4th Gen Core Processor HD Audio vendor: Dell
    driver: snd_hda_intel v: kernel bus-ID: 00:03.0 chip-ID: 8086:0c0c
  Device-2: Intel 8 Series/C220 Series High Definition Audio vendor: Dell driver: snd_hda_intel
    v: kernel bus-ID: 00:1b.0 chip-ID: 8086:8c20
  Sound Server-1: ALSA v: k5.15.0-43-generic running: yes
  Sound Server-2: PulseAudio v: 15.99.1 running: yes
  Sound Server-3: PipeWire v: 0.3.48 running: yes
Network:
  Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet vendor: Dell driver: r8169
    v: kernel pcie: speed: 2.5 GT/s lanes: 1 port: e000 bus-ID: 02:00.0 chip-ID: 10ec:8168
  IF: enp2s0 state: down mac: <filter>
  Device-2: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter vendor: Dell
    driver: ath9k v: kernel pcie: speed: 2.5 GT/s lanes: 1 bus-ID: 03:00.0 chip-ID: 168c:0036
  IF: wlp3s0 state: up mac: <filter>
Bluetooth:
  Device-1: Qualcomm Atheros AR9462 Bluetooth type: USB driver: btusb v: 0.8 bus-ID: 3-10:6
    chip-ID: 0cf3:0036
  Report: hciconfig ID: hci0 rfk-id: 1 state: up address: <filter> bt-v: 2.1 lmp-v: 4.1 sub-v: 1

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dmesg | grep Blue
[   16.135480] Bluetooth: Core ver 2.22
[   16.135507] Bluetooth: HCI device and connection manager initialized
[   16.135510] Bluetooth: HCI socket layer initialized
[   16.135511] Bluetooth: L2CAP socket layer initialized
[   16.135514] Bluetooth: SCO socket layer initialized
[   27.691117] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   27.691121] Bluetooth: BNEP filters: protocol multicast
[   27.691126] Bluetooth: BNEP socket layer initialized
[   47.881659] Bluetooth: RFCOMM TTY layer initialized
[   47.881665] Bluetooth: RFCOMM socket layer initialized
[   47.881670] Bluetooth: RFCOMM ver 1.11

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lspci -knn | grep Net -A2; lsusb
03:00.0 Network controller [0280]: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter [168c:0036] (rev 01)
	Subsystem: Dell QCA9565 / AR9565 Wireless Network Adapter [1028:020c]
	Kernel driver in use: ath9k
	Kernel modules: ath9k
Bus 002 Device 002: ID 8087:8000 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:8008 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 004: ID 0bda:0158 Realtek Semiconductor Corp. USB 2.0 multicard reader
Bus 003 Device 003: ID 413c:301a Dell Computer Corp. Dell MS116 Optical Mouse
Bus 003 Device 002: ID 413c:2111 Dell Computer Corp. Dell USB Wired Entry Keyboard
Bus 003 Device 006: ID 0cf3:0036 Qualcomm Atheros Communications AR9462 Bluetooth
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub