How to connect a desktop to the internet via Ethernet to a laptop, with the laptop connected via WiFi to a mobile hotspot, with both on Manjaro Linux

Does anyone have a more up-to-date version of instructions than the following link, and that work for Manjaro Archlinux? https://www.softprayog.in/troubleshooting/connecting-two-computers-with-ethernet-lan-cable

The laptop is connected to the internet via WiFi to my phone's hotspot.

Laptop details:

➜  ~ inxi -Fxxx
System:    Host: lm Kernel: 4.19.80-1-MANJARO x86_64 bits: 64 compiler: gcc v: 9.2.0 Desktop: KDE Plasma 5.17.1 tk: Qt 5.13.1 
           wm: kwin_x11 dm: SDDM Distro: Manjaro Linux 
Machine:   Type: Laptop System: Dell product: Latitude E6410 v: 0001 serial: <root required> Chassis: type: 9 
           serial: <root required> 
           Mobo: Dell model: 0HNGW4 serial: <root required> UEFI: Dell v: A16 date: 12/05/2013 
Battery:   ID-1: BAT0 charge: 37.4 Wh condition: 37.4/48.8 Wh (76%) volts: 12.3/11.1 model: Samsung SDI DELL PT43699 
           type: Li-ion serial: 7 status: Full 
CPU:       Topology: Dual Core model: Intel Core i5 M 560 bits: 64 type: MT MCP arch: Nehalem rev: 5 L2 cache: 3072 KiB 
           flags: lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 21285 
           Speed: 1270 MHz min/max: 1199/2667 MHz boost: enabled Core speeds (MHz): 1: 1505 2: 1478 3: 1478 4: 1487 
Graphics:  Device-1: Intel Core Processor Integrated Graphics vendor: Dell Latitude E6410 driver: i915 v: kernel 
           bus ID: 00:02.0 chip ID: 8086:0046 
           Display: x11 server: X.Org 1.20.5 driver: modesetting alternate: fbdev,intel,vesa compositor: kwin_x11 
           resolution: 1440x900~60Hz 
           OpenGL: renderer: Mesa DRI Intel Ironlake Mobile v: 2.1 Mesa 19.2.2 direct render: Yes 
Audio:     Device-1: Intel 5 Series/3400 Series High Definition Audio vendor: Dell Latitude E6410 driver: snd_hda_intel 
           v: kernel bus ID: 00:1b.0 chip ID: 8086:3b56 
           Sound Server: ALSA v: k4.19.80-1-MANJARO 
Network:   Device-1: Intel 82577LM Gigabit Network vendor: Dell Latitude E6410 driver: e1000e v: 3.2.6-k port: 7040 
           bus ID: 00:19.0 chip ID: 8086:10ea 
           IF: eno1 state: down mac: 00:26:b9:e0:a5:6c 
           Device-2: Broadcom and subsidiaries BCM43224 802.11a/b/g/n vendor: Dell Wireless 1520 Half-size Mini PCIe Card 
           driver: bcma-pci-bridge v: N/A port: 7000 bus ID: 02:00.0 chip ID: 14e4:4353 
           IF-ID-1: wlp2s0b1 state: up mac: 88:9f:fa:5e:83:8f 
Drives:    Local Storage: total: 298.09 GiB used: 128.42 GiB (43.1%) 
           ID-1: /dev/sda vendor: Seagate model: ST9320423AS size: 298.09 GiB speed: 3.0 Gb/s rotation: 7200 rpm 
           serial: 5VJ9NCZP rev: SDM1 scheme: GPT 
Partition: ID-1: / size: 292.12 GiB used: 128.42 GiB (44.0%) fs: ext4 dev: /dev/dm-0 
Sensors:   System Temperatures: cpu: 50.0 C mobo: N/A sodimm: 44.0 C 
           Fan Speeds (RPM): cpu: 2893 
Info:      Processes: 196 Uptime: 2h 02m Memory: 3.72 GiB used: 2.13 GiB (57.2%) Init: systemd v: 242 Compilers: gcc: 9.2.0 
           clang: 9.0.0 Shell: zsh v: 5.7.1 running in: konsole inxi: 3.0.36 
➜  ~ 

Not myself, but mother Arch has this.

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Thanks, I'll try following that tomorrow morning!

When I plugged an Ethernet cable between the two computers they recognised a connection so a crossover cable may not be required, but I'll see if I can confirm that.

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