Bash script for viewing VM quickly the hypervisor (KVM)

I'm looking for a way to get a quick view of the hypervisor when looking for a guest virtual machine (running KVM).

I have a script that collects all my hypervisors (with guest VMs) in a single text file separated by a line break (see example below):

Hypervisor: hypervisor1 ID    Name                           State---------------------------------------------------- 1     vm1                            running 2     vm2                            running 3     vm3                            running 4     vm4                            runningHypervisor: hypervisor2 ID    Name                           State---------------------------------------------------- 1     vm1                            running 2     vm2                            running 3     vm3                            running 4     vm4                            running 5     vm5                            running 6     vm6                            runningETC....

I tried with:

grep -v -E "(-|Name)" file.txt |awk -F '''{print $2}' |tr "\n" " " |sed "s/ * / -> /"

But I get this:

hypervisor1 -> vm1 vm2 vm3 vm4  hypervisor2 vm1 vm2 vm3 vm4 vm5 vm6

My question is: how do I get this displayed?

hypervisor1 -> vm1 vm2 vm3 vm4hypervisor2 -> vm1 vm2 vm3 vm4 vm5 vm6etc.. etc...