How to run multiple IHostService implementation in IHost?

Hi everybody. Did somebody add two or more IHostServices to HostApplicationBuilder and it works? This is my code:
HostApplicationBuilder builder = Host.CreateApplicationBuilder(args);
builder.Services.AddSingleton<IMetadataService, MetadataService>();
builder.Services.AddTransient<ConversionWorker>();
builder.Services.AddTransient<ESignWorker>();
builder.Services.AddHostedService<ConversionService>();
builder.Services.AddHostedService<ESignService>();
IHost host = builder.Build();
host.Run(); But works just first added service ConversionService